Update 03_deploy_personal_environment.md

If the OBD WEB process is not terminated and cluster information is viewed directly in the black screen mode, an error will be reported. Therefore, this point needs to be specified.

Author: echo77-nan

docs/user_manual/quick_starts/en-US/chapter_02_deploy_oceanbase_database/03_deploy_personal_environment.md

@@ -460,7 +460,7 @@ If you have multiple servers available, you can run the `obd web` command to sta
     # View the cluster list.
     obd cluster list
 
-    # View the details of the myoceanbase cluster.
+    # View the details of the myoceanbase cluster.(Prior to operation, terminate the OBD web process; otherwise, an error will occur: "Another app is currently holding the obd lock.")
     obd cluster display myoceanbase
     ```