add useful command

Liongrass · Liongrass · commit 3a839db29e45 · 2025-11-16T14:09:11.000-08:00
diff --git a/README.md b/README.md
@@ -67,6 +67,7 @@ Useful commands:
 ```bash
 pm2 list
 pm2 monit
+pm2 restart 21UP
 ```
 
 To see logs:
