Adding link to loggin throttling

Author: ThomasLandauer

rate_limiter.rst

@@ -11,7 +11,7 @@ defensive measure to protect services from excessive use (intended or not) and
 maintain their availability. It's also useful to control your internal or
 outbound processes (e.g. limit the number of simultaneously processed messages).
 
-Symfony uses these rate limiters in built-in features like "login throttling",
+Symfony uses these rate limiters in built-in features like :ref:`login throttling <security-login-throttling>`,
 which limits how many failed login attempts a user can make in a given period of
 time, but you can use them for your own features too.