Update backend_wx.py

Author: tohc1

lib/matplotlib/backends/backend_wx.py

@@ -976,7 +976,7 @@ def _onClose(self, event):
         self.figmgr.frame = None
         # remove figure manager from Gcf.figs
         Gcf.destroy(self.figmgr)
-        # Carry on with wx close event propagation, frame & children destruction
+        # Carry on with close event propagation, frame & children destruction
         event.Skip()
 
     def GetToolBar(self):