Fixed various typos.

Applied patch by snowleopard2 fixing a bunch of typos such as misspellings and double words in the documentation. Combined the patch with some local queued typos waiting to be committed as well as adding new typo fixes inspired by the patch.

Function names with American spelling were not changed nor was third-party code touched. The only code changes involve some changes in strings that are translated ("Can not" -> "Cannot").

Closes #13063 (again).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67280 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/propgridiface.h

@@ -381,7 +381,7 @@ public:
         If there is no property with such name, @NULL pointer is returned.
 
         @remarks Properties which have non-category, non-root parent
-                 can not be accessed globally by their name. Instead, use
+                 cannot be accessed globally by their name. Instead, use
                  "<property>.<subproperty>" instead of "<subproperty>".
     */
     wxPGProperty* GetProperty( const wxString& name ) const
@@ -879,7 +879,7 @@ public:
     wxString SaveEditableState( int includedStates = AllStates ) const;
 
     /**
-        Lets user to set the strings listed in the choice dropdown of a
+        Lets user set the strings listed in the choice dropdown of a
         wxBoolProperty. Defaults are "True" and "False", so changing them to,
         say, "Yes" and "No" may be useful in some less technical applications.
     */