修改头文件

Signed-off-by: N朱天怡 <zhutianyi2@huawei.com>

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

@@ -205,7 +205,7 @@ wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
 Stage模型示例：
 
 ```ts
-import Ability from '@ohos.application.Ability';
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
 import wantAgent from '@ohos.wantAgent';
 
@@ -297,7 +297,7 @@ wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj) => {
 Stage模型示例：
 
 ```ts
-import Ability from '@ohos.application.Ability';
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
 import wantAgent from '@ohos.wantAgent';
 
@@ -365,7 +365,7 @@ backgroundTaskManager.stopBackgroundRunning(featureAbility.getContext(), callbac
 Stage模型示例：
 
 ```ts
-import Ability from '@ohos.application.Ability';
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
 
 function callback(err, data) {
@@ -422,7 +422,7 @@ backgroundTaskManager.stopBackgroundRunning(featureAbility.getContext()).then(()
 Stage模型示例：
 
 ```ts
-import Ability from '@ohos.application.Ability';
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.backgroundTaskManager';
 
 export default class MainAbility extends Ability {

zh-cn/application-dev/reference/apis/js-apis-resourceschedule-backgroundTaskManager.md

@@ -255,7 +255,7 @@ startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: Want
 **示例**：
 
 ```js
-import Ability from '@ohos.application.Ability'
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
 import wantAgent from '@ohos.wantAgent';
 
@@ -334,7 +334,7 @@ startBackgroundRunning(context: Context, bgMode: BackgroundMode, wantAgent: Want
 **示例**：
 
 ```js
-import Ability from '@ohos.application.Ability'
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager'; 
 import wantAgent from '@ohos.wantAgent';
 
@@ -400,7 +400,7 @@ stopBackgroundRunning(context: Context, callback: AsyncCallback<void>): vo
 **示例**：
 
 ```js
-import Ability from '@ohos.application.Ability'
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
 
 function callback(error, data) {
@@ -461,7 +461,7 @@ stopBackgroundRunning(context: Context): Promise<void>
 **示例**：
 
 ```js
-import Ability from '@ohos.application.Ability'
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
 
 export default class MainAbility extends Ability {

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

@@ -293,7 +293,7 @@ struct Index {
 3、当需要跨设备或者跨应用在后台执行长时任务时，可以通过Call的方式在后台创建并运行Ability。使用方式参考[Call调用开发指南（同设备）](../application-models/uiability-intra-device-interaction.md#通过call调用实现uiability交互仅对系统应用开放)，[Call调用开发指南（跨设备）](../application-models/hop-multi-device-collaboration.md#通过跨设备call调用实现多端协同)。
 
 ```ts
-import Ability from '@ohos.application.Ability'
+import Ability from '@ohos.app.ability.UIAbility';
 import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';  
 import wantAgent from '@ohos.wantAgent';