doc: add ai-proxy plugin

.gitignore

@@ -18,3 +18,6 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+.idea
+.vscode

README.md

@@ -41,12 +41,12 @@ Please be noted that locale switching function doesn't work if you start the web
 
 ### Add a new doc
 
-1. Add new .md file under i18n/en-us/docusaurus-plugin-content-docs/current or i18n/zh-cn/docusaurus-plugin-content-docs/current. Corresponding to Chinese file and English file , and the Chinese and English file names should be consistent.
+1. Add new .md file under i18n/en-us/docusaurus-plugin-content-docs/current or i18n/zh-cn/docusaurus-plugin-content-docs/current. Corresponding to Chinese file and English file , and the Chinese and English file names should be consistent. Due to the special reasons of the current i18n implementation, you also need to add a stub file with the same name in the [docs](./docs) directory.
 2. Update sidebar.js, add a new entry to the blog in either en-us or zh-cn.
 
 ### Add a new article for developers
 
-1. Add new .md file under i18n/en-us/docusaurus-plugin-content-docs/current/developers or i18n/zh-cn/docusaurus-plugin-content-docs/current/developers, the file name should end up with _dev.md. Note that the suffix _dev is necessary.
+1. Add new .md file under i18n/en-us/docusaurus-plugin-content-docs/current/developers or i18n/zh-cn/docusaurus-plugin-content-docs/current/developers, the file name should end up with _dev.md. Note that the suffix _dev is necessary. Due to the special reasons of the current i18n implementation, you also need to add a stub file with the same name in the [docs](./docs) directory.
 2. Update sidebar.js, add a new entry in either en-us or zh-cn.
 
 ### Add a new blog

docs/plugins/ai-proxy.md

@@ -0,0 +1 @@
+Placeholder. DO NOT DELETE.