https://github.com/symfony/symfony-docs/pull/11574#discussion_r283684459

Co-Authored-By: Oskar Stark <[email protected]>

Author: MatTheCat

security/firewall_restriction.rst

@@ -12,7 +12,7 @@ The last firewall can be configured without any matcher to handle every request
 Restricting by Service
 ----------------------
 
-You can configure any service implementing ``Symfony\Component\HttpFoundation\RequestMatcherInterface``
+You can configure any service implementing :class:`Symfony\\Component\\HttpFoundation\\RequestMatcherInterface`
 as ``request_matcher``.
 
 .. configuration-block::