导入的窗口模块中Window从大写修改为小写window

Signed-off-by: zyjhandsome <zyjhandsome@126.com>

zh-cn/application-dev/application-models/uiability-intra-device-interaction.md

@@ -50,7 +50,7 @@ UIAbility是系统调度的最小单元。在设备内的功能模块之间跳
    
    ```ts
    import UIAbility from '@ohos.app.ability.UIAbility';
-   import Window from '@ohos.window';
+   import window from '@ohos.window';
    
    export default class FuncAbility extends UIAbility {
        onCreate(want, launchParam) {

zh-cn/application-dev/application-models/uiability-usage.md

@@ -11,10 +11,10 @@ UIAbility组件的基本用法包括：指定UIAbility的启动页面以及获
 
 ```ts
 import UIAbility from '@ohos.app.ability.UIAbility';
-import Window from '@ohos.window';
+import window from '@ohos.window';
 
 export default class EntryAbility extends UIAbility {
-    onWindowStageCreate(windowStage: Window.WindowStage) {
+    onWindowStageCreate(windowStage: window.WindowStage) {
         // Main window is created, set main page for this ability
         windowStage.loadContent('pages/Index', (err, data) => {
             // ...

zh-cn/application-dev/security/accesstoken-guidelines.md

@@ -133,14 +133,14 @@
    
    ```typescript
    import UIAbility from '@ohos.app.ability.UIAbility';
-   import Window from '@ohos.window';
+   import window from '@ohos.window';
    import abilityAccessCtrl from '@ohos.abilityAccessCtrl';
    import { Permissions } from '@ohos.abilityAccessCtrl';
    
    export default class EntryAbility extends UIAbility {
        // ...
    
-       onWindowStageCreate(windowStage: Window.WindowStage) {
+       onWindowStageCreate(windowStage: window.WindowStage) {
            // Main window is created, set main page for this ability
            let context = this.context;
            let AtManager = abilityAccessCtrl.createAtManager();