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

Signed-off-by: N葛亚芳 <geyafang@huawei.com>

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

@@ -37,7 +37,7 @@
 - 工具
     - [DevEco Studio（OpenHarmony）使用指南](quick-start/deveco-studio-user-guide-for-openharmony.md)
 - 示例教程
-    - [示例代码](https://gitee.com/openharmony/app_samples/blob/master/README_zh.md)
+    - [示例代码](https://gitee.com/openharmony/applications_app_samples/blob/master/README_zh.md)
     - [Codelabs](https://gitee.com/openharmony/codelabs/blob/master/README.md)
 - API参考
     - [组件参考（基于TS扩展的声明式开发范式）](reference/arkui-ts/Readme-CN.md)