[Security] Fix wrong anchor

Author: mdoutreluingne

security.rst

@@ -28,7 +28,7 @@ creates a ``security.yaml`` configuration file for you:
     # config/packages/security.yaml
     security:
         enable_authenticator_manager: true
-        # https://symfony.com/doc/current/security.html#c-hashing-passwords
+        # https://symfony.com/doc/current/security.html#registering-the-user-hashing-passwords
         password_hashers:
             Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface: 'auto'
         # https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers