update zh-cn/application-dev/task-management/work-scheduler-dev-guide.md.

Signed-off-by: LiAn <lian15@huawei.com> 
Signed-off-by: NLiAn <lian15@huawei.com>

zh-cn/application-dev/task-management/work-scheduler-dev-guide.md

@@ -193,3 +193,9 @@ onWorkStop(work: WorkInfo): void | 延迟调度任务结束回调
         console.info('workschedulerLog isLastWorkTimeOut failed, because:' + err.code);
       });
     })
+
+## 相关实例
+
+基于延迟任务调度，有以下相关实例可供参考：
+
+- [`WorkScheduler`：延迟任务调度（eTS）（API9）](https://gitee.com/openharmony/applications_app_samples/tree/master/ResourcesSchedule/WorkScheduler)
\ No newline at end of file