The author of github-readme-stats uses the non-standard code "cn" for
simplified Chinese, see
[here](https://github.com/anuraghazra/github-readme-stats?tab=readme-ov-file#available-locales).
While for traditional Chinese the author only provides "zh-tw". The
github-readme-stats functions on repo page will break if the user sets
the site language to ALL variants of Chinese except for zh-tw. This hack
is to make all sub-variants of simplified Chinese fall back to "cn" and
all sub-variants of traditional Chinese fall back to "zh-tw".
This patch fixes the problem and has been tested locally & with GitHub
pages.
7719863ea0