grammar

mwclient/errors.py

@@ -63,7 +63,7 @@ class InvalidResponse(MwClientError):
     def __init__(self, response_text=None):
         self.message = 'Did not get a valid JSON response from the server. Check that ' + \
                        'you used the correct hostname. If you did, the server might ' + \
-                       'be wrongly configured or experience temporary problems.'
+                       'be wrongly configured or experiencing temporary problems.'
         self.response_text = response_text
         MwClientError.__init__(self, self.message, response_text)