Calls out Localnet support for CUDN

Author: Steven Smith

modules/nw-cudn-cr.adoc

@@ -11,7 +11,7 @@ The following procedure creates a `ClusterUserDefinedNetwork` custom resource (C
 [IMPORTANT]
 ====
 * The `ClusterUserDefinedNetwork` CR is intended for use by cluster administrators and should not be used by non-administrators. If used incorrectly, it might result in security issues with your deployment, cause disruptions, or break the cluster network.
-* {VirtProductName} only supports the `Layer2` topology.
+* {VirtProductName} only supports the `Layer2` and `Localnet` topologies.
 ====
 
 .Prerequisites