Merge pull request #2061 from yunline/Readme-update

Update badge in `README.zh-cn.rst`

Author: Starbuck5

docs/readmes/README.zh-cn.rst

@@ -143,8 +143,8 @@ pygame显然依赖于SDL和Python。此外pygame还嵌入了几个较小的库
 
 .. |Python3| image:: https://img.shields.io/badge/python-3-blue.svg?v=1
 
-.. |GithubCommits| image:: https://img.shields.io/github/commits-since/pygame-community/pygame-ce/2.1.4.svg
-   :target: https://github.com/pygame-community/pygame-ce/compare/2.1.4...main
+.. |GithubCommits| image:: https://img.shields.io/github/commits-since/pygame-community/pygame-ce/2.2.0.svg
+   :target: https://github.com/pygame-community/pygame-ce/compare/2.2.0...main
 
 .. |DocsStatus| image:: https://img.shields.io/website?down_message=offline&label=docs&up_message=online&url=https%3A%2F%2Fpyga.me%2Fdocs%2F
    :target: https://pyga.me/docs/