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

json格式错误

Signed-off-by: louisyf <286194574@qq.com> 
Signed-off-by: N刘逸凡 <286194574@qq.com>

zh-cn/application-dev/device/vibrator-guidelines.md

@@ -55,7 +55,7 @@
                ],
                "when": "inuse"
            }
-       },
+       }
    ]
    ```