Add a warning message

Author: lrtoyou1223

articles/data-factory/self-hosted-integration-runtime-auto-update.md

@@ -48,6 +48,9 @@ If you have multiple nodes, and for some reasons that some of them aren't auto-u
 ## Self-hosted Integration Runtime Expire Notification
 If you want to manually control which version of self-hosted integration runtime, you can disable the setting of auto-update and install it manually. Each version of self-hosted integration runtime expires in one year. The expiring message is shown in ADF portal and self-hosted integration runtime client **90 days** before expired.
 
+> [!WARNING]
+> If the self-hosted integration runtime becomes expired, it will display an offline status and no longer work properly.
+
 When you receive the expired notification, you can use below PowerShell command to find all expired and expiring self-hosted integration runtime in your environment. Then you can upgrade them accordingly.
 
 ```powershell