DOCSP-45388 -- remove sharded cluster references from replica set docs (#1989)

Author: jvincent-mongodb

source/multi-cluster-arch.txt

@@ -22,7 +22,6 @@ Limitations
 
 The following limitations exist for |multi-clusters|:
 
-- Deploy only replica sets of |mongodb-multis|. Sharded cluster deployments aren't supported.
 - Use |onprem| versions later than 5.0.7.
 - Use only |k8s| |k8s-secrets| for your secret storage tool. The |hashicorp-vault| 
   secret storage tool isn't supported.

source/multi-cluster.txt

@@ -13,9 +13,8 @@ Deploy MongoDB Resources on Multiple Kubernetes Clusters
 .. important::
 
    You can deploy |k8s-op-full| to manage MongoDB deployments that span two
-   or more |k8s| clusters. The |k8s-op-short| supports deploying only
-   replica sets across two or more |k8s| clusters. Deploying sharded
-   clusters across two or more |k8s| clusters is not supported.
+   or more |k8s| clusters. The |k8s-op-short| supports deploying both
+   replica sets and sharded clusters across two or more |k8s| clusters. 
 
 :ref:`multi-cluster-overview-ref`
   Learn about |multi-clusters|.