Merge pull request #62824 from lahinson/osdocs-7069-hcp-glossary-update

[OSDOCS-7069]: Add entry to hosted control planes glossary

Author: mburke5678

modules/hosted-control-planes-concepts-personas.adoc

@@ -21,6 +21,8 @@ hosted control plane:: An {product-title} control plane that runs on the managem
 
 hosting cluster:: See _management cluster_.
 
+managed cluster:: A cluster that the hub cluster manages. This term is specific to the cluster lifecycle that the multicluster engine for Kubernetes Operator manages in Red Hat Advanced Cluster Management. A managed cluster is not the same thing as a _management cluster_. For more information, see link:https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.8/html/about/welcome-to-red-hat-advanced-cluster-management-for-kubernetes#managed-cluster[Managed cluster].
+
 management cluster:: An {product-title} cluster where the HyperShift Operator is deployed and where the control planes for tenant clusters are hosted. The management cluster is synonymous with the _hosting cluster_.
 
 management cluster infrastructure:: Network, compute, and storage resources of the management cluster.