fix typo

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@45778 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/ghelp.py

@@ -811,7 +811,7 @@ class InstallExtensionWindow(wx.Frame):
         
         self.optionBox = wx.StaticBox(parent = self.panel, id = wx.ID_ANY,
                                       label = " %s " % _("Options"))
-        task = menuform.GUI().ParseInterface(cmd = ['g.extension.py'])
+        task = menuform.GUI().ParseInterface(cmd = ['g.extension'])
         for f in task.get_options()['flags']:
             name = f.get('name', '')
             desc = f.get('label', '')