add API links

Author: bicpi

cookbook/security/acl_advanced.rst

@@ -175,9 +175,10 @@ Process for Reaching Authorization Decisions
 The ACL class provides two methods for determining whether a security identity
 has the required bitmasks, ``isGranted`` and ``isFieldGranted``. When the ACL
 receives an authorization request through one of these methods, it delegates
-this request to an implementation of ``PermissionGrantingStrategy``. This allows
-you to replace the way access decisions are reached without actually modifying
-the ACL class itself.
+this request to an implementation of
+:class:`Symfony\\Component\\Security\\Acl\\Domain\\PermissionGrantingStrategy`.
+This allows you to replace the way access decisions are reached without actually
+modifying the ACL class itself.
 
 The ``PermissionGrantingStrategy`` first checks all your object-scope ACEs. If none
 is applicable, the class-scope ACEs will be checked. If none is applicable,