No code changes, fix some typos.

Change several occurrences of "it's" where "its" is meant, as well as a few other minor typos.



git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78497 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/window.h

@@ -3014,7 +3014,7 @@ public:
         This function returns @true if this window, or one of its parent
         windows, is scheduled for destruction and can be useful to avoid
         manipulating it as it's usually useless to do something with a window
-        which is on the point of disappearing anyhow.
+        which is at the point of disappearing anyhow.
      */
     bool IsBeingDeleted() const;