update zh-cn/application-dev/ability/fa-serviceability.md.

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

zh-cn/application-dev/ability/fa-serviceability.md

@@ -128,7 +128,7 @@ let promise = featureAbility.startAbility(
 
     使用OpenHarmony IDL（OpenHarmony Interface Definition Language）来自动生成对应客户端服务端及IRemoteObject代码，具体示例代码和说明请参考：
 
-   - [`OpenHarmony IDL`：TS开发步骤](https://gitee.com/openharmony/docs/blob/master/zh-cn/application-dev/IDL/idl-guidelines.md#32-ts开发步骤)
+   - [`OpenHarmony IDL`：TS开发步骤](https://gitee.com/openharmony/docs/blob/master/zh-cn/application-dev/IDL/idl-guidelines.md#ts开发步骤)
 
 2. 在对应文件编写代码