message: Clean up code and add change log entry for zh-TW [skip ci]
diff: @@ -146,6 +146,8 @@ for the list of changes made since `v2.0.0-alpha.1`.
  - [ko locale was updated for v2](https://github.com/date-fns/date-fns/pull/1100). Kudos to [@iamssen](https://github.com/iamssen)!
  +- [zh-TW locale was updated for v2](https://github.com/date-fns/date-fns/pull/1101). Credits go to [@jackhsu978](https://github.com/jackhsu978)!
  +
  - New locale-dependent week-numbering year helpers:
  - `getWeek`
  