fix typo

Author: steinkel

en/development/routing.rst

@@ -638,7 +638,7 @@ the ``$options`` argument::
     });
 
 Note the additional route parameters will be added to all the connected routes defined
-inside the prefix block. You will need to use all the paramenters in the url array to 
+inside the prefix block. You will need to use all the parameters in the url array to 
 build the route later, if you don't use them you'll get a ``MissingRouteException``.
 
 Multi word prefixes are by default converted using dasherize inflection, ie ``MyPrefix``