update docs

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

en/application-dev/Readme-EN.md

@@ -8,8 +8,13 @@
     -   [JavaScript-based Web-like Development Paradigm](ui/ui-arkui-js.md)
 
     -   [TypeScript-based Declarative Development Paradigm](ui/ui-arkui-ts.md)
+-   [Agent-Powered Scheduled Reminders ](background-agent-scheduled-reminder/Readme-EN.md)
+-   [Background Task Management ](background-task-management/Readme-EN.md)
 -   [Media](media/Readme-EN.md)
+-   [Security](security/Readme-EN.md)
 -   [IPC & RPC](connectivity/ipc-rpc.md)
+-   [Data Management](database/Readme-EN.md)
+-   [USB Service](usb/Readme-EN.md)
 -   [DFX](dfx/Readme-EN.md)
 -   [Development References](reference/Readme-EN.md)
     -   [JavaScript-based Web-like Development Paradigm](reference/arkui-js/Readme-EN.md)

en/application-dev/background-task-management/Readme-EN.md

+# Background Task Management 
+
+- [Background Task Management Overview](background-task-overview.md)
+- [Background Task Management Development](background-task-dev-guide.md)
\ No newline at end of file

en/application-dev/media/Readme-EN.md

 # Media
 
--   [Audio](audio.md)
+-   Audio
     -   [Audio Overview](audio-overview.md)
     -   [Audio Playback Development](audio-playback.md) 
 

zh-cn/application-dev/Readme-CN.md

@@ -8,10 +8,12 @@
 - 方舟开发框架（ArkUI）
     -  [基于JS扩展的类Web开发范式](ui/ui-arkui-js.md)
     -  [基于TS扩展的声明式开发范式](ui/ui-arkui-ts.md)
+- [后台代理提醒](background-agent-scheduled-reminder/Readme-CN.md)
+- [后台任务管理](background-task-management/Readme-CN.md)
 - [媒体](media/Readme-CN.md)
 - [安全](security/Readme-CN.md)
 - [IPC与RPC通信](connectivity/ipc-rpc.md)
-- [分布式数据服务](database/Readme-CN.md)
+- [数据管理](database/Readme-CN.md)
 - [USB服务](usb/Readme-CN.md)
 - [DFX](dfx/Readme-CN.md)
 - [开发参考](reference/Readme-CN.md)