Use :: instead of code block php

OskarStark · OskarStark · commit 99a9d9c0925e · 2019-08-12T08:50:34.000+02:00
diff --git a/components/mailer.rst b/components/mailer.rst
@@ -63,9 +63,7 @@ it:
 
     $ composer require symfony/google-mailer
 
-Then, use the SMTP Gmail transport:
-
-.. code-block:: php
+Then, use the SMTP Gmail transport::
 
     use Symfony\Component\Mailer\Bridge\Google\Smtp\GmailTransport;
 
