Update how-to-managed-network.md

Adding ParallelRunStep requirement for queue and table PEs of associated default storage account.
Reusing section for batch endpoint as they have same requirement.

Author: AhmadAbdullah91

articles/machine-learning/how-to-managed-network.md

@@ -1020,9 +1020,9 @@ If you plan to use __Visual Studio Code__ with Azure Machine Learning, add outbo
 * `marketplace.visualstudio.com`
 * `vscode.download.prss.microsoft.com`
 
-### Scenario: Use batch endpoints
+### Scenario: Use batch endpoints or ParallelRunStep
 
-If you plan to use __Azure Machine Learning batch endpoints__ for deployment, add outbound _private endpoint_ rules to allow traffic to the following sub resources for the default storage account:
+If you plan to use __Azure Machine Learning batch endpoints__ for deployment or __ParallelRunStep__, add outbound _private endpoint_ rules to allow traffic to the following sub resources for the default storage account:
 
 * `queue`
 * `table`