Fix broken heading.

en/appendices/2-0-migration-guide.rst

@@ -92,7 +92,7 @@ lowercased Folders:
 * webroot
 
 AppController / AppModel / AppHelper / AppShell
-========================
+===============================================
 
 The ``app/app_controller.php``, ``app/app_model.php``, ``app/app_helper.php are now located and 
 named as ``app/Controller/AppController.php``, ``app/Model/AppModel.php`` and ``app/Helper/AppHelper.php`` respectively.
@@ -1280,4 +1280,4 @@ need to pass the package they are located in. Example::
 .. meta::
     :title lang=en: 2.0 Migration Guide
     :description lang=en: This page summarizes the changes from CakePHP 1.3 that will assist in a project migration to 2.0, as well as for a developer reference to get up to date with the changes made to the core since the CakePHP 1.3 branch.
-    :keywords lang=en: cakephp upgrade,cakephp migration,migration guide,1.3 to 2.0,update cakephp,backwards compatibility,api changes,x versions,directory structure,new features
+    :keywords lang=en: cakephp upgrade,cakephp migration,migration guide,1.3 to 2.0,update cakephp,backwards compatibility,api changes,x versions,directory structure,new features