导入模块规范化

Signed-off-by: Nningning <wangningning14@huawei.com>

zh-cn/application-dev/reference/apis/js-apis-WorkSchedulerExtensionAbility.md

@@ -12,7 +12,6 @@
 
 ```ts
 import WorkSchedulerExtensionAbility from '@ohos.WorkSchedulerExtensionAbility';
-import workScheduler from '@ohos.resourceschedule.workScheduler';
 ```
 
 ## 属性
@@ -40,11 +39,13 @@ onWorkStart(work: workScheduler.WorkInfo): void
 **示例：** 
 
   ```ts
-    export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
-        onWorkStart(workInfo: workScheduler.WorkInfo) {
-            console.log('MyWorkSchedulerExtensionAbility onWorkStart' + JSON.stringify(workInfo));
-        }
+  import workScheduler from '@ohos.resourceschedule.workScheduler';
+
+  export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
+    onWorkStart(workInfo: workScheduler.WorkInfo) {
+        console.log('MyWorkSchedulerExtensionAbility onWorkStart' + JSON.stringify(workInfo));
     }
+  }
   ```
 
 ## WorkSchedulerExtensionAbility.onWorkStop
@@ -65,9 +66,11 @@ onWorkStop(work: workScheduler.WorkInfo): void
 **示例：** 
 
   ```ts
-    export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
-        onWorkStop(workInfo: workScheduler.WorkInfo) {
-            console.log('MyWorkSchedulerExtensionAbility onWorkStop' + JSON.stringify(workInfo));
-        }
+  import workScheduler from '@ohos.resourceschedule.workScheduler';
+
+  export default class MyWorkSchedulerExtensionAbility extends WorkSchedulerExtensionAbility {
+    onWorkStop(workInfo: workScheduler.WorkInfo) {
+        console.log('MyWorkSchedulerExtensionAbility onWorkStop' + JSON.stringify(workInfo));
     }
+  }
   ```
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