bug #12540 Edit comment in php block of the admonition note related to escape @ and % (abdellatif05)

This PR was merged into the 3.4 branch.

Discussion
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Edit comment in php block of the admonition note related to escape @ and %

In the php block of the admonition note related to escape **@** and **%**  :
comments should be related to PHP and not related to XML

Commits
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f7c20b5 Edit comment

Author: OskarStark

service_container/parameters.rst

@@ -136,7 +136,7 @@ and hidden with the service definition:
 
         .. code-block:: php
 
-            // the @ symbol does NOT need to be escaped in XML
+            // the @ symbol does NOT need to be escaped in PHP
             $container->setParameter('mailer_password', '@securepass');
 
             // But % does need to be escaped