Clarify RSocket Configuration Docs

Closes gh-13718

docs/modules/ROOT/pages/reactive/integrations/rsocket.adoc

@@ -62,7 +62,10 @@ This configuration enables <<rsocket-authentication-simple,simple authentication
 
 For Spring Security to work we need to apply `SecuritySocketAcceptorInterceptor` to the `ServerRSocketFactory`.
 This is what connects our `PayloadSocketAcceptorInterceptor` we created with the RSocket infrastructure.
-In a Spring Boot application this is done automatically using `RSocketSecurityAutoConfiguration` with the following code.
+
+Spring Boot registers it automatically in `RSocketSecurityAutoConfiguration` when you include {gh-samples-url}/reactive/rsocket/hello-security/build.gradle[the correct dependencies].
+
+Or, if you are not using Boot's auto-configuration, you can register it manually in the following way:
 
 [tabs]
 ======
@@ -91,6 +94,8 @@ fun springSecurityRSocketSecurity(interceptor: SecuritySocketAcceptorInterceptor
 ----
 ======
 
+To customize the interceptor itself, use `RSocketSecurity` to add <<rsocket-authentication,authentication>> and <<rsocket-authorization,authorization>>.
+
 [[rsocket-authentication]]
 == RSocket Authentication