Description: 修复stage卡片开发指导和context接口文档描述不一致的问题
Sig: SIG_ApplicationFramework
Feature or Bugfix: Bugfix
Binary Source: No
Signed-off-by: Nyangzk <yangzhongkai@huawei.com>
Change-Id: I3356c3528652b392840b317627eaef98cf74b149