Rename '桌面版' to '桌面版指南' in mkdocs.yml

Author: maninhill

mkdocs.yml

@@ -168,7 +168,7 @@ nav:
       - 源码部署: installation/deployment_installation.md      
   - 教学视频: instructional_video.md
   - 联系我们: contact.md
-  - 桌面版: desktop.md
+  - 桌面版指南: desktop.md
   - 嵌入式指南:
       - 嵌入式概述: embedded/summary.md
       - 嵌入式流程: embedded/process.md