fix announcement 404

Author: huan

README.md

@@ -250,7 +250,7 @@ Python Wechaty Scala Wechaty **BETA** Released!
 
 Read more from our Multi-language Wechaty Beta Release event from our blog:
 
-- [Multi Language Wechaty Beta Release Announcement!](https://wechaty.github.io/2020/06/19/multi-language-wechaty-beta-release/)
+- [Multi Language Wechaty Beta Release Announcement!](https://wechaty.js.org/2020/06/19/multi-language-wechaty-beta-release/)
 
 ### v0.4 (Mar 15, 2020) master