upported wxHelpProvider docs fixes from r52197; minor tweaks to Doxygen docs of other classes in cshelp.h

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52698 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/window.h

@@ -2030,7 +2030,7 @@ public:
         implementation,
         and not in the window object itself.
 
-        @see GetHelpText(), wxHelpProvider
+        @see GetHelpText(), wxHelpProvider::AddHelp()
     */
     virtual void SetHelpText(const wxString& helpText);