分布式硬件api 示例异常处理添加

Signed-off-by: N@shi-xiaoxiao-iris <shixiaoxiao2@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-device-manager.md

@@ -223,7 +223,7 @@ release(): void
   try {
     dmInstance.release();
   } catch (err) {
-    console.error("[myApiTest]release errCode:" + err.code + ",errorMessage:" + err.message);
+    console.error("release errCode:" + err.code + ",errorMessage:" + err.message);
   }
   ```
 
@@ -243,7 +243,6 @@ getTrustedDeviceListSync(): Array<DeviceInfo>
 
 - 示例：
   ```js
-  var deviceInfoList = dmInstance.getTrustedDeviceListSync();
   try {
     var deviceInfoList = dmInstance.getTrustedDeviceListSync();
   } catch (err) {