add window application-dev

Signed-off-by: Nchyyy0213 <chenhaiying3@huawei.com>
Change-Id: I86325d67b11342021f5a3139271908ee1c8180a0

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

@@ -105,5 +105,5 @@ import window from '@ohos.window';
 })
 ```
 
-完整[示例工程](https://gitee.com/openharmony/windowmanager/tree/master/AppDemo/immersive)。
+完整[示例工程](https://gitee.com/openharmony/windowmanager/tree/master/AppDemo/window/immersive)。