added missing documentation relate to ra.
added missing documentation relate to ra.

mesutcelik/hazelcast,emre-aydin/hazelcast,mesutcelik/hazelcast,dsukhoroslov/hazelcast,juanavelez/hazelcast,emre-aydin/hazelcast,tombujok/hazelcast,Donnerbart/hazelcast,mdogan/hazelcast,dsukhoroslov/hazelcast,lmjacksoniii/hazelcast,tkountis/hazelcast,mesutcelik/hazelcast,emrahkocaman/hazelcast,tufangorel/hazelcast,tombujok/hazelcast,juanavelez/hazelcast,mdogan/hazelcast,dbrimley/hazelcast,lmjacksoniii/hazelcast,dbrimley/hazelcast,Donnerbart/hazelcast,tufangorel/hazelcast,emrahkocaman/hazelcast,tufangorel/hazelcast,tkountis/hazelcast,emre-aydin/hazelcast,tkountis/hazelcast,mdogan/hazelcast,Donnerbart/hazelcast,dbrimley/hazelcast