docs: add oxfmt-config link

Author: meteorlxy

README.md

@@ -5,6 +5,7 @@
 ## Packages
 
 - [@vuepress/eslint-config](https://github.com/vuepress/configs/tree/main/packages/eslint-config)
+- [@vuepress/oxfmt-config](https://github.com/vuepress/configs/tree/main/packages/oxfmt-config)
 - [@vuepress/prettier-config](https://github.com/vuepress/configs/tree/main/packages/prettier-config)
 - [@vuepress/tsconfig](https://github.com/vuepress/configs/tree/main/packages/tsconfig)