Changed winhelp file->exit accelerator key from "e" to "x".

programs/winhelp/En.rc

@@ -29,7 +29,7 @@ MAIN_MENU MENU LANGUAGE LANG_ENGLISH, SUBLANG_DEFAULT
   MENUITEM "&Print", MNID_FILE_PRINT
   MENUITEM "Printer &setup...", MNID_FILE_SETUP
    MENUITEM SEPARATOR
-  MENUITEM "&Exit", MNID_FILE_EXIT
+  MENUITEM "E&xit", MNID_FILE_EXIT
  }
  POPUP "&Edit" {
    MENUITEM "&Copy...", MNID_EDIT_COPYDLG