modify window demo destroy

Signed-off-by: Nleafly2021 <figo.yefei@huawei.com>
Change-Id: I743329073ca241460c1766531dfbbf2d6f618b70

zh-cn/application-dev/windowmanager/application-window-stage.md

@@ -374,9 +374,7 @@ class MainAbility extends Ability {
                        console.info('Succeeded in showing the window. Data: ' + JSON.stringify(data));
                    });
                });
-               //5.销毁悬浮窗。当不再需要悬浮窗时，可根据具体实现逻辑，使用destroy对其进行销毁，此处以监听窗口区域外的点击事件为例实现悬浮窗的销毁。
-               windowClass.on('touchOutside', () => {
-                   console.info('touch outside');
+               //5.销毁悬浮窗。当不再需要悬浮窗时，可根据具体实现逻辑，使用destroy对其进行销毁。
                windowClass.destroy((err, data) => {
                    if (err.code) {
                        console.error('Failed to destroy the window. Cause: ' + JSON.stringify(err));
@@ -385,7 +383,6 @@ class MainAbility extends Ability {
                    console.info('Succeeded in destroying the window. Data: ' + JSON.stringify(data));
                });
            });
-           });
        }
    };
    ```