【OpenHarmony开源贡献者计划2022】update zh-cn/application-dev/security/accesstoken-guidelines.md.

Json数据格式错误，多了一个逗号去掉
Signed-off-by: wu-di523227<diwuch@isoftstone.com>
Signed-off-by: N吴迪 <diwuch@isoftstone.com>

zh-cn/application-dev/security/accesstoken-guidelines.md

@@ -68,7 +68,7 @@
                      "when":"always"
                 }
             }
-        ],
+        ]
     }
 }
 ```