IssueNo:

Description:update notification doc
Sig: SIG_ApplicationFramework
Feature or Bugfix:Bugfix
Binary Source:No
Signed-off-by: Nliqiang <liqiang121@huawei.com>
Change-Id: I66b7eba0fc1f6933f2155861262f392935622a20

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

 # 公共事件与通知
 
-[公共事件与通知概述](notification-brief)
+[公共事件与通知概述](notification-brief.md)
 
 ### 公共事件