Fix title underlining

Carlos Granados · weaverryan · commit 909fab2ec5e5 · 2015-11-05T14:49:22.000-05:00
diff --git a/cookbook/event_dispatcher/before_after_filters.rst b/cookbook/event_dispatcher/before_after_filters.rst
@@ -2,7 +2,7 @@
    single: EventDispatcher
 
 How to Set Up Before and After Filters
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+======================================
 
 It is quite common in web application development to need some logic to be
 executed just before or just after your controller actions acting as filters
