!5632 翻译完成 5471：文档层级修改

Merge pull request !5632 from ester.zhou/TR-5471

en/application-dev/notification/assistant-guidelines.md

@@ -2,9 +2,9 @@
 
 The common event and notification module provides debugging tools to facilitate your application development. With these tools, you can view common event and notification information, publish common events, and more. These tools have been integrated with the system. You can run related commands directly in the shell.
 
-### cem Debugging Assistant
+## cem Debugging Assistant
 
-##### publish
+### publish
 
 * Functionality
 
@@ -41,7 +41,7 @@ The common event and notification module provides debugging tools to facilitate
 
    ![cem-publish-all](figures/cem-publish-all.png)
 
-##### dump
+### dump
 
 * Functionality
 
@@ -67,7 +67,7 @@ The common event and notification module provides debugging tools to facilitate
 
 ​        ![cem-dump-e](figures/cem-dump-e.png)
 
-##### help
+### help
 
 * Functionality
 
@@ -83,9 +83,9 @@ The common event and notification module provides debugging tools to facilitate
 
 
 
-### anm Debugging Assistant
+## anm Debugging Assistant
 
-##### dump
+### dump
 
 * Functionality
 
@@ -119,7 +119,7 @@ The common event and notification module provides debugging tools to facilitate
 
   Set the number of the cached recent notifications to be displayed to 10.
 
-##### help
+### help
 
 * Functionality
 

en/application-dev/notification/common-event.md

 # Common Event Development
-### Introduction
+## Introduction
 OpenHarmony provides a Common Event Service (CES) for applications to subscribe to, publish, and unsubscribe from common events.
 
 Common events are classified into system common events and custom common events.