URL where issue was found: 

https://docs.redhat.com/en/documentation/red_hat_streams_for_apache_kafka/3.0/html/using_streams_for_apache_kafka_on_rhel/assembly-securing-kafka-str#ref-kafka-authorization-super-user-str

Description of issue:

The example for adding super is wrong for `super.users=User:admin,User:operator`

That should be configured separately by a semicolon, not a comma.

`super.users=User:admin;User:operator`

Just like https://docs.redhat.com/en/documentation/red_hat_streams_for_apache_kafka/3.0/html/using_streams_for_apache_kafka_on_rhel/assembly-securing-kafka-str#authentication_between_kafka_nodes

super.users=User:kafka-broker;User:kafka-controller