No changes, just fix some typos in comments in wxXRC code.

Closes #14714.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72585 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/xrc/xmlres.h

@@ -137,7 +137,7 @@ public:
     // code for all controls used within the resource.
     void AddHandler(wxXmlResourceHandler *handler);
 
-    // Add a new handler at the begining of the handler list
+    // Add a new handler at the beginning of the handler list
     void InsertHandler(wxXmlResourceHandler *handler);
 
     // Removes all handlers