(AzureCXP) Updated WAF command for adding Managed Rule

resolves MicrosoftDocs/azure-docs#118472

Author: ChaitanyaNaykodi-MSFT

articles/frontdoor/create-front-door-cli.md

@@ -239,7 +239,8 @@ az network front-door waf-policy managed-rules add \
     --policy-name contosoWAF \
     --resource-group myRGFD \
     --type Microsoft_DefaultRuleSet \
-    --version 1.2 
+    --action Block \
+    --version 2.1 
 ```
 
 ```azurecli-interactive
@@ -330,4 +331,4 @@ az group delete --name myRGFD
 
 Advance to the next article to learn how to add a custom domain to your Front Door.
 > [!div class="nextstepaction"]
-> [Add a custom domain](standard-premium/how-to-add-custom-domain.md)
+> [Add a custom domain](standard-premium/how-to-add-custom-domain.md)