[DOC] Supportability of Standalone Topic and User Operator with AMQ Streams

In Topic Operator Official documentation and User Operator Official Documentation , It is described that:

• Standalone to operate with Kafka clusters not managed by AMQ Streams

Standalone Topic Operator and User operator installation/deployment seems not supported with AMQ Streams on OpenShift. 

Document should be updated with answers of queries :

1. Standalone Topic Operator and User operator  are supported with AMQ Streams on Openshift or not ?

2. Standalone Topic Operator and User operator  are supported with AMQ Streams on RHEL or not ?

2. If supported on OpenShift or RHEL than there is a need of proper documentation how to use it together with Kafka brokers.