doc: Use self-closing tags for `return` and `argument`

For the time being we don't support writing a description for those, preferring
having all details in the method's description.

Using self-closing tags saves half the lines, and prevents contributors from
thinking that they should write the argument or return documentation there.

3 files changed, 52 insertions, 104 deletions

diff --git a/modules/webrtc/doc_classes/WebRTCDataChannel.xml b/modules/webrtc/doc_classes/WebRTCDataChannel.xml
index 3435dda982..cf5735bab5 100644
--- a/modules/webrtc/doc_classes/WebRTCDataChannel.xml
+++ b/modules/webrtc/doc_classes/WebRTCDataChannel.xml
@@ -8,88 +8,76 @@
 	</tutorials>
 	<methods>
 		<method name="close">
-			<return type="void">
-			</return>
+			<return type="void" />
 			<description>
 				Closes this data channel, notifying the other peer.
 			</description>
 		</method>
 		<method name="get_buffered_amount" qualifiers="const">
-			<return type="int">
-			</return>
+			<return type="int" />
 			<description>
 				Returns the number of bytes currently queued to be sent over this channel.
 			</description>
 		</method>
 		<method name="get_id" qualifiers="const">
-			<return type="int">
-			</return>
+			<return type="int" />
 			<description>
 				Returns the id assigned to this channel during creation (or auto-assigned during negotiation).
 				If the channel is not negotiated out-of-band the id will only be available after the connection is established (will return [code]65535[/code] until then).
 			</description>
 		</method>
 		<method name="get_label" qualifiers="const">
-			<return type="String">
-			</return>
+			<return type="String" />
 			<description>
 				Returns the label assigned to this channel during creation.
 			</description>
 		</method>
 		<method name="get_max_packet_life_time" qualifiers="const">
-			<return type="int">
-			</return>
+			<return type="int" />
 			<description>
 				Returns the [code]maxPacketLifeTime[/code] value assigned to this channel during creation.
 				Will be [code]65535[/code] if not specified.
 			</description>
 		</method>
 		<method name="get_max_retransmits" qualifiers="const">
-			<return type="int">
-			</return>
+			<return type="int" />
 			<description>
 				Returns the [code]maxRetransmits[/code] value assigned to this channel during creation.
 				Will be [code]65535[/code] if not specified.
 			</description>
 		</method>
 		<method name="get_protocol" qualifiers="const">
-			<return type="String">
-			</return>
+			<return type="String" />
 			<description>
 				Returns the sub-protocol assigned to this channel during creation. An empty string if not specified.
 			</description>
 		</method>
 		<method name="get_ready_state" qualifiers="const">
-			<return type="int" enum="WebRTCDataChannel.ChannelState">
-			</return>
+			<return type="int" enum="WebRTCDataChannel.ChannelState" />
 			<description>
 				Returns the current state of this channel, see [enum ChannelState].
 			</description>
 		</method>
 		<method name="is_negotiated" qualifiers="const">
-			<return type="bool">
-			</return>
+			<return type="bool" />
 			<description>
 				Returns [code]true[/code] if this channel was created with out-of-band configuration.
 			</description>
 		</method>
 		<method name="is_ordered" qualifiers="const">
-			<return type="bool">
-			</return>
+			<return type="bool" />
 			<description>
 				Returns [code]true[/code] if this channel was created with ordering enabled (default).
 			</description>
 		</method>
 		<method name="poll">
-			<return type="int" enum="Error">
-			</return>
+			<return type="int" enum="Error" />
 			<description>
 				Reserved, but not used for now.
 			</description>
 		</method>
 		<method name="was_string_packet" qualifiers="const">
-			<return type="bool">
-			</return>
+			<return type="bool" />
 			<description>
 				Returns [code]true[/code] if the last received packet was transferred as text. See [member write_mode].
 			</description>
diff --git a/modules/webrtc/doc_classes/WebRTCMultiplayerPeer.xml b/modules/webrtc/doc_classes/WebRTCMultiplayerPeer.xml
index 26c5bfa6ce..0c4a0d4ea0 100644
--- a/modules/webrtc/doc_classes/WebRTCMultiplayerPeer.xml
+++ b/modules/webrtc/doc_classes/WebRTCMultiplayerPeer.xml
@@ -12,58 +12,45 @@
 	</tutorials>
 	<methods>
 		<method name="add_peer">
-			<return type="int" enum="Error">
-			</return>
-			<argument index="0" name="peer" type="WebRTCPeerConnection">
-			</argument>
-			<argument index="1" name="peer_id" type="int">
-			</argument>
-			<argument index="2" name="unreliable_lifetime" type="int" default="1">
-			</argument>
+			<return type="int" enum="Error" />
+			<argument index="0" name="peer" type="WebRTCPeerConnection" />
+			<argument index="1" name="peer_id" type="int" />
+			<argument index="2" name="unreliable_lifetime" type="int" default="1" />
 			<description>
 				Add a new peer to the mesh with the given [code]peer_id[/code]. The [WebRTCPeerConnection] must be in state [constant WebRTCPeerConnection.STATE_NEW].
 				Three channels will be created for reliable, unreliable, and ordered transport. The value of [code]unreliable_lifetime[/code] will be passed to the [code]maxPacketLifetime[/code] option when creating unreliable and ordered channels (see [method WebRTCPeerConnection.create_data_channel]).
 			</description>
 		</method>
 		<method name="close">
-			<return type="void">
-			</return>
+			<return type="void" />
 			<description>
 				Close all the add peer connections and channels, freeing all resources.
 			</description>
 		</method>
 		<method name="get_peer">
-			<return type="Dictionary">
-			</return>
-			<argument index="0" name="peer_id" type="int">
-			</argument>
+			<return type="Dictionary" />
+			<argument index="0" name="peer_id" type="int" />
 			<description>
 				Return a dictionary representation of the peer with given [code]peer_id[/code] with three keys. [code]connection[/code] containing the [WebRTCPeerConnection] to this peer, [code]channels[/code] an array of three [WebRTCDataChannel], and [code]connected[/code] a boolean representing if the peer connection is currently connected (all three channels are open).
 			</description>
 		</method>
 		<method name="get_peers">
-			<return type="Dictionary">
-			</return>
+			<return type="Dictionary" />
 			<description>
 				Returns a dictionary which keys are the peer ids and values the peer representation as in [method get_peer].
 			</description>
 		</method>
 		<method name="has_peer">
-			<return type="bool">
-			</return>
-			<argument index="0" name="peer_id" type="int">
-			</argument>
+			<return type="bool" />
+			<argument index="0" name="peer_id" type="int" />
 			<description>
 				Returns [code]true[/code] if the given [code]peer_id[/code] is in the peers map (it might not be connected though).
 			</description>
 		</method>
 		<method name="initialize">
-			<return type="int" enum="Error">
-			</return>
-			<argument index="0" name="peer_id" type="int">
-			</argument>
-			<argument index="1" name="server_compatibility" type="bool" default="false">
-			</argument>
+			<return type="int" enum="Error" />
+			<argument index="0" name="peer_id" type="int" />
+			<argument index="1" name="server_compatibility" type="bool" default="false" />
 			<description>
 				Initialize the multiplayer peer with the given [code]peer_id[/code] (must be between 1 and 2147483647).
 				If [code]server_compatibilty[/code] is [code]false[/code] (default), the multiplayer peer will be immediately in state [constant MultiplayerPeer.CONNECTION_CONNECTED] and [signal MultiplayerPeer.connection_succeeded] will not be emitted.
@@ -71,10 +58,8 @@
 			</description>
 		</method>
 		<method name="remove_peer">
-			<return type="void">
-			</return>
-			<argument index="0" name="peer_id" type="int">
-			</argument>
+			<return type="void" />
+			<argument index="0" name="peer_id" type="int" />
 			<description>
 				Remove the peer with given [code]peer_id[/code] from the mesh. If the peer was connected, and [signal MultiplayerPeer.peer_connected] was emitted for it, then [signal MultiplayerPeer.peer_disconnected] will be emitted.
 			</description>
diff --git a/modules/webrtc/doc_classes/WebRTCPeerConnection.xml b/modules/webrtc/doc_classes/WebRTCPeerConnection.xml
index 62e524825d..f6f360503f 100644
--- a/modules/webrtc/doc_classes/WebRTCPeerConnection.xml
+++ b/modules/webrtc/doc_classes/WebRTCPeerConnection.xml
@@ -15,33 +15,25 @@
 	</tutorials>
 	<methods>
 		<method name="add_ice_candidate">
-			<return type="int" enum="Error">
-			</return>
-			<argument index="0" name="media" type="String">
-			</argument>
-			<argument index="1" name="index" type="int">
-			</argument>
-			<argument index="2" name="name" type="String">
-			</argument>
+			<return type="int" enum="Error" />
+			<argument index="0" name="media" type="String" />
+			<argument index="1" name="index" type="int" />
+			<argument index="2" name="name" type="String" />
 			<description>
 				Add an ice candidate generated by a remote peer (and received over the signaling server). See [signal ice_candidate_created].
 			</description>
 		</method>
 		<method name="close">
-			<return type="void">
-			</return>
+			<return type="void" />
 			<description>
 				Close the peer connection and all data channels associated with it. Note, you cannot reuse this object for a new connection unless you call [method initialize].
 			</description>
 		</method>
 		<method name="create_data_channel">
-			<return type="WebRTCDataChannel">
-			</return>
-			<argument index="0" name="label" type="String">
-			</argument>
+			<return type="WebRTCDataChannel" />
+			<argument index="0" name="label" type="String" />
 			<argument index="1" name="options" type="Dictionary" default="{
-}">
-			</argument>
+}" />
 			<description>
 				Returns a new [WebRTCDataChannel] (or [code]null[/code] on failure) with given [code]label[/code] and optionally configured via the [code]options[/code] dictionary. This method can only be called when the connection is in state [constant STATE_NEW].
 				There are two ways to create a working data channel: either call [method create_data_channel] on only one of the peer and listen to [signal data_channel_received] on the other, or call [method create_data_channel] on both peers, with the same values, and the [code]negotiated[/code] option set to [code]true[/code].
@@ -63,26 +55,22 @@
 			</description>
 		</method>
 		<method name="create_offer">
-			<return type="int" enum="Error">
-			</return>
+			<return type="int" enum="Error" />
 			<description>
 				Creates a new SDP offer to start a WebRTC connection with a remote peer. At least one [WebRTCDataChannel] must have been created before calling this method.
 				If this functions returns [constant OK], [signal session_description_created] will be called when the session is ready to be sent.
 			</description>
 		</method>
 		<method name="get_connection_state" qualifiers="const">
-			<return type="int" enum="WebRTCPeerConnection.ConnectionState">
-			</return>
+			<return type="int" enum="WebRTCPeerConnection.ConnectionState" />
 			<description>
 				Returns the connection state. See [enum ConnectionState].
 			</description>
 		</method>
 		<method name="initialize">
-			<return type="int" enum="Error">
-			</return>
+			<return type="int" enum="Error" />
 			<argument index="0" name="configuration" type="Dictionary" default="{
-}">
-			</argument>
+}" />
 			<description>
 				Re-initialize this peer connection, closing any previously active connection, and going back to state [constant STATE_NEW]. A dictionary of [code]options[/code] can be passed to configure the peer connection.
 				Valid [code]options[/code] are:
@@ -103,31 +91,24 @@
 			</description>
 		</method>
 		<method name="poll">
-			<return type="int" enum="Error">
-			</return>
+			<return type="int" enum="Error" />
 			<description>
 				Call this method frequently (e.g. in [method Node._process] or [method Node._physics_process]) to properly receive signals.
 			</description>
 		</method>
 		<method name="set_local_description">
-			<return type="int" enum="Error">
-			</return>
-			<argument index="0" name="type" type="String">
-			</argument>
-			<argument index="1" name="sdp" type="String">
-			</argument>
+			<return type="int" enum="Error" />
+			<argument index="0" name="type" type="String" />
+			<argument index="1" name="sdp" type="String" />
 			<description>
 				Sets the SDP description of the local peer. This should be called in response to [signal session_description_created].
 				After calling this function the peer will start emitting [signal ice_candidate_created] (unless an [enum Error] different from [constant OK] is returned).
 			</description>
 		</method>
 		<method name="set_remote_description">
-			<return type="int" enum="Error">
-			</return>
-			<argument index="0" name="type" type="String">
-			</argument>
-			<argument index="1" name="sdp" type="String">
-			</argument>
+			<return type="int" enum="Error" />
+			<argument index="0" name="type" type="String" />
+			<argument index="1" name="sdp" type="String" />
 			<description>
 				Sets the SDP description of the remote peer. This should be called with the values generated by a remote peer and received over the signaling server.
 				If [code]type[/code] is [code]offer[/code] the peer will emit [signal session_description_created] with the appropriate answer.
@@ -137,29 +118,23 @@
 	</methods>
 	<signals>
 		<signal name="data_channel_received">
-			<argument index="0" name="channel" type="Object">
-			</argument>
+			<argument index="0" name="channel" type="Object" />
 			<description>
 				Emitted when a new in-band channel is received, i.e. when the channel was created with [code]negotiated: false[/code] (default).
 				The object will be an instance of [WebRTCDataChannel]. You must keep a reference of it or it will be closed automatically. See [method create_data_channel].
 			</description>
 		</signal>
 		<signal name="ice_candidate_created">
-			<argument index="0" name="media" type="String">
-			</argument>
-			<argument index="1" name="index" type="int">
-			</argument>
-			<argument index="2" name="name" type="String">
-			</argument>
+			<argument index="0" name="media" type="String" />
+			<argument index="1" name="index" type="int" />
+			<argument index="2" name="name" type="String" />
 			<description>
 				Emitted when a new ICE candidate has been created. The three parameters are meant to be passed to the remote peer over the signaling server.
 			</description>
 		</signal>
 		<signal name="session_description_created">
-			<argument index="0" name="type" type="String">
-			</argument>
-			<argument index="1" name="sdp" type="String">
-			</argument>
+			<argument index="0" name="type" type="String" />
+			<argument index="1" name="sdp" type="String" />
 			<description>
 				Emitted after a successful call to [method create_offer] or [method set_remote_description] (when it generates an answer). The parameters are meant to be passed to [method set_local_description] on this object, and sent to the remote peer over the signaling server.
 			</description>