Update modules/authentication/proc-enabling-authentication-with-your-custom-authentication-provider.adoc

Author: themr0c

modules/authentication/proc-enabling-authentication-with-your-custom-authentication-provider.adoc

@@ -1,6 +1,7 @@
 [id="enabling-authentication-with-your-custom-authentication-provider"]
 = Enabling authentication with your custom authentication provider
 
+You can extend {product} with your custom authentication provider by using your custom authentication backend and frontend plugins.
 To authenticate users with your custom authentication provider, create, install and configure your custom authentication backend and frontend plugins in {product}.
 
 .Prerequisites