Merge pull request #186446 from algorni/patch-4

Updated PubSub Chat sample to create proper hub

Author: PRMerger10

articles/azure-web-pubsub/tutorial-build-chat.md

@@ -607,7 +607,7 @@ Use the Azure CLI [az webpubsub hub create](/cli/azure/webpubsub/hub#az_webpubsu
   > Replace <domain-name> with the name ngrok printed.
 
 ```azurecli-interactive
-az webpubsub hub create -n "<your-unique-resource-name>" -g "myResourceGroup" --hub-name "chat" --event-handler url-template="https://<domain-name>.ngrok.io/eventHandler" user-event-pattern="*" system-event="connected"
+az webpubsub hub create -n "<your-unique-resource-name>" -g "myResourceGroup" --hub-name "SampleChatHub" --event-handler url-template="https://<domain-name>.ngrok.io/eventHandler" user-event-pattern="*" system-event="connected"
 ```
 
 After the update is completed, open the home page http://localhost:8080/index.html, input your user name, you’ll see the connected message printed in the server console.