!8055 DM docs modify

Merge pull request !8055 from 熊欢/master

!8055 DM docs modify
Merge pull request !8055 from 熊欢/master
e6c70a6d · openharmony_ci · Gitee · e78e7fb7 · 585d683c · e6c70a6d
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zh-cn/application-dev/reference/apis/js-apis-device-manager.md .../application-dev/reference/apis/js-apis-device-manager.md +1 -1

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--- a/zh-cn/application-dev/reference/apis/js-apis-device-manager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-device-manager.md
@@ -406,7 +406,7 @@ startDeviceDiscovery(subscribeInfo: SubscribeInfo, filterOptions: string): void
            "value": 50 // 需过滤发现设备的距离，单位(cm)
        }
    ]
-};
+  };
  dmInstance.startDeviceDiscovery(subscribeInfo, JSON.stringify(filterOptions)); //当有设备发现时，通过deviceFound回调通知给应用程序
  ```