Rename variable to $BatchApplicationId in script

Author: jonburchel

articles/data-factory/join-azure-ssis-integration-runtime-virtual-network-powershell.md

@@ -40,7 +40,7 @@ $SecondPublicIP = "[your second public IP address resource ID or leave it empty]
 1. Navigate to [Azure portal](https://portal.azure.com).
 1. In the search bar, type `Microsoft Azure Batch`, and select it from the drop-down list, under **Microsoft Entra ID**. 
 1. On the **Microsoft Azure Batch** page, note down or copy the **Application ID** to the clipboard.
-1. In the following script, set the `$eventGridAppId` variable to this value before running it.  
+1. In the following script, set the `$BatchApplicationId` variable to this value before running it.  
 
 ## Configure a virtual network