fixed short array CS in comments

Author: fabpot

ContainerAwareEventDispatcher.php

@@ -67,7 +67,7 @@ public function addListenerService($eventName, $callback, $priority = 0)
         @trigger_error(sprintf('The %s class is deprecated since Symfony 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
 
         if (!\is_array($callback) || 2 !== \count($callback)) {
-            throw new \InvalidArgumentException('Expected an array("service", "method") argument');
+            throw new \InvalidArgumentException('Expected an ["service", "method"] argument');
         }
 
         $this->listenerIds[$eventName][] = [$callback[0], $callback[1], $priority];

EventSubscriberInterface.php

@@ -36,9 +36,9 @@ interface EventSubscriberInterface
      *
      * For instance:
      *
-     *  * array('eventName' => 'methodName')
-     *  * array('eventName' => array('methodName', $priority))
-     *  * array('eventName' => array(array('methodName1', $priority), array('methodName2')))
+     *  * ['eventName' => 'methodName']
+     *  * ['eventName' => ['methodName', $priority]]
+     *  * ['eventName' => [['methodName1', $priority], ['methodName2']]]
      *
      * @return array The event names to listen to
      */