Fix typos with codespell

Using codespell 1.15.0.

Method:
```
$ cat > ../godot-word-whitelist.txt << EOF
ang
curvelinear
doubleclick
leapyear
lod
merchantibility
nd
numer
ois
ony
que
seeked
synching
te
uint
unselect
webp
EOF

$ codespell -w -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"
$ git diff // undo unwanted changes
```

2 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index 3b3fbf9ed5..2d9eec10d2 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -580,7 +580,7 @@ bool RasterizerSceneGLES2::reflection_probe_instance_begin_render(RID p_instance
 
 		//the approach below is fatal for powervr
 
-		// Set the initial (empty) mipmaps, all need to be set for this to work in GLES2, even if later wont be used.
+		// Set the initial (empty) mipmaps, all need to be set for this to work in GLES2, even if they won't be used later.
 		while (size >= 1) {
 
 			for (int i = 0; i < 6; i++) {
diff --git a/drivers/gles2/shaders/canvas.glsl b/drivers/gles2/shaders/canvas.glsl
index 7ba2856216..7dce784f52 100644
--- a/drivers/gles2/shaders/canvas.glsl
+++ b/drivers/gles2/shaders/canvas.glsl
@@ -347,7 +347,7 @@ void main() {
 	vec4 color = color_interp;
 	vec2 uv = uv_interp;
 #ifdef USE_FORCE_REPEAT
-	//needs to use this to workaround GLES2/WebGL1 forcing tiling that textures that dont support it
+	//needs to use this to workaround GLES2/WebGL1 forcing tiling that textures that don't support it
 	uv = mod(uv, vec2(1.0, 1.0));
 #endif