Shorten the = to match the length of the text.

micheal · weaverryan · commit 693698ec0549 · 2014-10-29T21:00:16.000-07:00
diff --git a/cookbook/doctrine/dbal.rst b/cookbook/doctrine/dbal.rst
@@ -2,7 +2,7 @@
    pair: Doctrine; DBAL
 
 How to Use Doctrine's DBAL
-================================
+==========================
 
 .. note::
 
