Fixed formatting.

UPGRADE-2.1.md

@@ -33,16 +33,19 @@ UPGRADE FROM 2.0 to 2.1
     Retrieving the locale from a Twig template:
 
     Before: `{{ app.request.session.locale }}` or `{{ app.session.locale }}`
+
     After: `{{ app.request.locale }}`
 
     Retrieving the locale from a PHP template:
 
     Before: `$view['session']->getLocale()`
+
     After: `$view['request']->getLocale()`
 
     Retrieving the locale from PHP code:
 
     Before: `$session->getLocale()`
+
     After: `$request->getLocale()`
 
 * Method `equals` of `Symfony\Component\Security\Core\User\UserInterface` has