We will need to add a section for multi-cluster with ambient mode to: https://docs.redhat.com/en/documentation/red_hat_openshift_service_mesh/3.2/html/installing/ossm-multi-cluster-topologies

This will be a similar procedure showing how to configure multi-primary with Istio's ambient mode.

Alternatively, if the procedure is very similar (like 90% the same) with sidecar ambient mode, it could be incorporated into the existing multi-cluster page with a note that only multi-primary is supported with ambient mode.