Fixed typo in flask quickstart docs. This fixes #21

docs/quickstart.rst

@@ -452,7 +452,7 @@ transmitted in a `POST` or `PUT` request) you can use the
 :attr:`~flask.request.form` attribute.  Here a full example of the two
 attributes mentioned above::
 
-    @app.route('/login', method=['POST', 'GET'])
+    @app.route('/login', methods=['POST', 'GET'])
     def login():
         error = None
         if request.method == 'POST':