[keycloak-user] Admin Rest API Documentation Issue (1.6.1.Final)

Hi, Client level role mappings related endpoints are currently misleading because it gives the feeling that the client-id could be passed instead of the id-of-client. But that's not the case. Hence please update the endpoints which has the signature: ...role-mappings/clients/{client}... --> ...role-mappings/clients/{id-of-client}...