Fix build errors

Author: natewiebe13

translation.rst

@@ -300,18 +300,14 @@ sure how it would be translated. For example, it could be translated multiple
 times if intended to be displayed to multiple users.
 
 Instead of translating a string at the time of creation, a ``Translatable``
-object can be created that can then be translated when used.
-
-.. code-block:: php
+object can be created that can then be translated when used::
 
     $message = new Translatable('Symfony is great!');
     $message = t('Symfony is great!');
 
 Later this message can be translated with a translator in either PHP or in Twig.
 
-PHP:
-
-.. code-block:: php
+PHP::
 
     Translatable::trans($translator, $message);