adds note that cf arch does not support cf files

deploy-apps/troubleshoot-app-health.html.md.erb

@@ -1,4 +1,4 @@
----
+ƒ---
 title: Troubleshooting Application Deployment and Health
 owner:
   - Routing
@@ -221,6 +221,8 @@ To view app logs streamed in real-time, use the `cf logs APP-NAME` command.
 
 To aggregate your app logs to view log history, bind your app to a syslog drain service. For more information, see [Streaming Application Logs to Log Management Services](./../services/log-management.html).
 
+<p class="note"><strong>Note<strong>: The Diego architecture does not support the <code>cf files</code> command.</p>
+
 ### <a id='trace'></a>Trace Cloud Controller REST API Calls ###
 
 If a command fails or produces unexpected results, re-run it with HTTP tracing