Replace az ml endpoint -> az ml online-deployment

Wrong logs command, fixed

Author: vs-li

articles/machine-learning/how-to-troubleshoot-online-endpoints.md

@@ -175,7 +175,7 @@ During this process, you can run into a few different issues depending on which
 To get more details about these errors, run:
 
 ```azurecli
-az ml endpoint get-logs -n <endpoint-name> --deployment <deployment-name> --lines 100
+az ml online-deployment get-logs -n <endpoint-name> --deployment <deployment-name> --l 100
 ``` 
 
 #### Unable to download user container image