Issue #12928: Update `zh` translations for HOWTO and CODE_OF_CONDUCT
==================================================
State: open
Created: 2025-10-29T17:00:08Z
Updated: 2025-10-30T14:23:59Z
Author: DerenC
Comments: 1
Labels: :eyes: Needs Review

Description:
==============================
## What does this PR do?

Improve repo by translations `zh` for HOWTO and CODE_OF_CONDUCT. Refer to issue #6782.



## Follow-up

- [x] Check the status of GitHub Actions and resolve any reported warnings!

- [x] I have checked, there is no ongoing PR that involves zh translations



## Notes

- This is my first open source contribution. Please give me feedback on how can I improve or do better :)

GitHub URL: https://github.com/EbookFoundation/free-programming-books/pull/12928