Update how-to-secure-prompt-flow.md

Removed bullet about org registry.

Author: meerakurup

articles/machine-learning/prompt-flow/how-to-secure-prompt-flow.md

@@ -94,7 +94,6 @@ Workspace managed virtual network is the recommended way to support network isol
 ## Known limitations
 
 - Workspace hub / lean workspace and AI studio don't support bring your own virtual network.
-- Org registry didn't support managed virtual network.
 - Managed online endpoint only supports workspace with managed virtual network. If you want to use your own virtual network, you may need one workspace for prompt flow authoring with your virtual network and another workspace for prompt flow deployment using managed online endpoint with workspace managed virtual network.
 
 ## Next steps
@@ -103,4 +102,4 @@ Workspace managed virtual network is the recommended way to support network isol
 - [Workspace managed network isolation](../how-to-managed-network.md)
 - [Secure Azure Kubernetes Service inferencing environment](../how-to-secure-online-endpoint.md)
 - [Secure your managed online endpoints with network isolation](../how-to-secure-kubernetes-inferencing-environment.md)
-- [Secure your RAG workflows with network isolation](../how-to-secure-rag-workflows.md)
+- [Secure your RAG workflows with network isolation](../how-to-secure-rag-workflows.md)