updated docs

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/release-notes/OpenHarmony-v3.1-beta.md

@@ -125,7 +125,7 @@ This version has the following updates to OpenHarmony 3.0 LTS.
 
 For details, see the following:
 
-_[JS API Differences] (api-change/v3.1-beta/js-apidiff-v3.1-beta.md)_
+_[JS API Differences](api-change/v3.1-beta/js-apidiff-v3.1-beta.md)_
 
 _[Native API Differences](api-change/v3.1-beta/native-apidiff-v3.1-beta.md)_
 

en/release-notes/api-change/v3.1-LTS/js-apidiff-v3.1-LTS.md

+# JS API Diff
+
+This document describes the changes of APIs in OpenHarmony 3.1 LTS when compared with OpenHarmony 3.1 Beta.
+
+## API Changes
+
+| Module| API| Change Type| Change Description|
+|  --------  |  --------  |  --------  |  --------  |
+| Distributed Hardware Subsystem - DeviceManager| release(): void | Deleted| This API is deleted to reduce security risks.|
+| Distributed Hardware Subsystem - DeviceManager| getTrustedDeviceListSync(): Array<DeviceInfo> | Deleted| This API is deleted to reduce security risks.|
+| Distributed Hardware Subsystem - DeviceManager| on(type: 'deviceStateChange', callback: Callback<{ action: DeviceStateChangeAction, device: DeviceInfo }>): void | Deleted| This API is deleted to reduce security risks.|
+| Distributed Hardware Subsystem - DeviceManager| off(type: 'deviceStateChange', callback?: Call back<{ action: DeviceStateChangeAction, device: DeviceInfo }>): void | Deleted| This API is deleted to reduce security risks.|
+| Distributed Hardware Subsystem - DeviceManager| on(type: 'serviceDie', callback: () => void): void | Deleted| This API is deleted to reduce security risks.|
+| Distributed Hardware Subsystem - DeviceManager| off(type: 'serviceDie', callback?: () => void): void | Deleted| This API is deleted to reduce security risks.|