[FrameworkBundle] fixed typo

src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php

@@ -127,7 +127,7 @@ class FrameworkExtension extends Extension
             'Symfony\\Component\\HttpKernel\\Event\\GetResponseEvent',
             'Symfony\\Component\\HttpKernel\\Event\\GetResponseForControllerResultEvent',
             'Symfony\\Component\\HttpKernel\\Event\\GetResponseForExceptionEvent',
-            'Symfony\\Component\\HttpKernel\\Events',
+            'Symfony\\Component\\HttpKernel\\CoreEvents',
 
             'Symfony\\Bundle\\FrameworkBundle\\Listener\\RouterListener',
             'Symfony\\Bundle\\FrameworkBundle\\Controller\\ControllerNameParser',