Fix #131 symfony error

Civi/DataProcessor/Event/ConfigContainerBuilderEvent.php

@@ -7,7 +7,7 @@
 namespace Civi\DataProcessor\Event;
 
 use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\EventDispatcher\Event;
+use \Civi\Core\Event\GenericHookEvent as Event;
 
 class ConfigContainerBuilderEvent extends Event {