update zh-cn/device-dev/subsystems/Readme-CN.md.

Signed-off-by: Nli-yan339 <liyan339@h-partners.com>
Signed-off-by: Nliyan <liyan339@h-partners.com>

zh-cn/device-dev/subsystems/Readme-CN.md

@@ -28,12 +28,12 @@
     - [窗口标题栏定制](subsys-arkui-customize_titlebar.md)
 - 小型系统图形图像
     - [小型系统图形图像概述](subsys-graphics-overview.md)
-      - [普通组件开发指导](subsys-graphics-common-guide.md)
-      - [容器类组件开发指导](subsys-graphics-container-guide.md)
-      - [布局容器类组件开发指导](subsys-graphics-layout-guide.md)
-      - [动画开发指导](subsys-graphics-animation-guide.md)
-      - [Windows QT 模拟器使用指导](subsys-graphics-simulator-guide.md)
-      - [如何对接图形框架](subsys-graphics-porting-guide.md)
+    - [普通组件开发指导](subsys-graphics-common-guide.md)
+    - [容器类组件开发指导](subsys-graphics-container-guide.md)
+    - [布局容器类组件开发指导](subsys-graphics-layout-guide.md)
+    - [动画开发指导](subsys-graphics-animation-guide.md)
+    - [Windows QT 模拟器使用指导](subsys-graphics-simulator-guide.md)
+    - [如何对接图形框架](subsys-graphics-porting-guide.md)
 - 媒体
     - 相机
         - [相机开发概述](subsys-multimedia-camera-overview.md)