Change AI usage from human-only to ai-assisted

Author: staleycyn

learn-pr/wwl-azure/introduction-to-azure-virtual-networks/index.yml

@@ -13,7 +13,7 @@ metadata:
   ms.custom:
   - N/A
   ms.service: azure-virtual-network
-  ai-usage: human-only
+  ai-usage: ai-assisted
 title: Introduction to Azure Virtual Networks
 summary: In this module, you learn how to design and implement Azure networking services. You learn about virtual networks, public and private IPs, DNS, virtual network peering, routing, and Azure Virtual NAT.
 abstract: |