removed trailing whitespace in Doxygen files

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52634 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/printdlg.h

@@ -26,7 +26,7 @@ public:
     /**
         Constructor. Pass a parent window, and optionally a pointer to a block of print
         data, which will be copied to the print dialog's print data.
-        
+
         @see wxPrintDialogData
     */
     wxPrintDialog(wxWindow* parent, wxPrintDialogData* data = NULL);