docs: update readme

README.md

@@ -47,7 +47,7 @@ An enterprise-class UI design language and React UI library.
 
 [![](https://gw.alipayobjects.com/mdn/rms_08e378/afts/img/A*Yl83RJhUE7kAAAAAAAAAAABkARQnAQ)](https://ant.design)
 
-English | [Português](./README-pt_BR.md) | [简体中文](./README-zh_CN.md) | [Українською](./README-uk_UA.md) | [Spanish](./README-sp_MX.md)
+English | [Português](./README-pt_BR.md) | [简体中文](./README-zh_CN.md) | [Українською](./README-uk_UA.md) | [Spanish](./README-sp_MX.md) | [日本語](./README-ja_JP.md)
 
 ## ✨ Features