Fixed code examples in components/event_dispatcher

Author: wouterj

components/event_dispatcher/introduction.rst

@@ -187,7 +187,7 @@ the dispatcher calls the ``AcmeListener::onFooAction`` method and passes the
 
         public function onFooAction(Event $event)
         {
-            // do something
+            // ... do something
         }
     }
 
@@ -489,4 +489,4 @@ be called.
 .. _Observer: http://en.wikipedia.org/wiki/Observer_pattern
 .. _`Symfony2 HttpKernel component`: https://github.com/symfony/HttpKernel
 .. _Closures: http://php.net/manual/en/functions.anonymous.php
-.. _PHP callable: http://www.php.net/manual/en/language.pseudo-types.php#language.types.callback
+.. _PHP callable: http://www.php.net/manual/en/language.pseudo-types.php#language.types.callback