update

Signed-off-by: N廖康康 <liaokangkang@huawei.com>

zh-cn/application-dev/background-task-management/background-task-dev-guide.md

@@ -33,7 +33,7 @@ import backgroundTaskManager from '@ohos.backgroundTaskManager';
    ```
    import backgroundTaskManager from '@ohos.backgroundTaskManager';
    let myReason = 'test requestSuspendDelay';
-   let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, (val) => {
+   let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, () => {
        console.info("Request suspend delay will time out.");
    });
    var id = delayInfo.requestId;console.info("requestId is: " + id);
@@ -60,7 +60,7 @@ import backgroundTaskManager from '@ohos.backgroundTaskManager';
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
 let myReason = 'test requestSuspendDelay';
 // 申请延迟挂起
-let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, (val) => {
+let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, () => {
     console.info("Request suspend delay will time out.");
 });
 // 打印延迟挂起信息

zh-cn/application-dev/reference/apis/js-apis-background-task-mgmt.md

@@ -38,7 +38,7 @@ requestSuspendDelay(reason: string, callback: Callback<void>): DelaySuspen
 - **示例**：
   ```
   let myReason = 'test requestSuspendDelay';
-  let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, (val) => {
+  let delayInfo = backgroundTaskManager.requestSuspendDelay(myReason, () => {
       console.info("Request suspend delay will time out.");
   })
   ```