updated application-dev-website

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/application-dev/application-dev-website-en.md → en/application-dev/application-dev-website.md

 # Application Development
 
-[Application Development Overview](application-dev-guide.md)
-
+- [Application Development Overview](application-dev-guide.md)
 - Learn About OpenHarmony
   - [OpenHarmony Project](../OpenHarmony-Overview.md)
   - [Glossary ](../device-dev/glossary/glossary.md)
   - [OpenHarmony Release Notes](../release-notes/Readme.md)
-- OpenHarmony Release Notes
-
       - OpenHarmony 3.x Releases
   
         -   [OpenHarmony v3.1 Beta (2021-12-31)](../release-notes/OpenHarmony-v3.1-beta.md)
@@ -29,8 +26,6 @@
         -   [OpenHarmony 1.0 (2020-09-10)](../release-notes/OpenHarmony-1-0.md)
 - Quick Start
   - [Getting Started with Application Development](quick-start/Readme-EN.md)
-- Basics
-  
     -   [DevEco Studio \(OpenHarmony\) User Guide](quick-start/deveco-studio-user-guide-for-openharmony.md)
         -   [Overview](quick-start/deveco-studio-overview.md)
         -   [Version Change History](quick-start/deveco-studio-release-notes.md)
@@ -44,9 +39,7 @@
     
   - [Directory Structure](quick-start/package-structure.md)
 -   Development
-    - [ArkUI](ui/Readme-EN.md)
--   UI
-    
+    - [UI](ui/Readme-EN.md) 
       - JavaScript-based Web-Like Development Paradigm
           - [Overview](ui/ui-js-overview.md)
           - Framework