i18n: Update Chinese translation

[KarlLee830]

Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions and describe your changes before submitting a pull request.

Before submitting, make sure you've checked the following:

• [x] Target branch: Please verify that the pull request targets the dev branch.
• [x] Description: Provide a concise description of the changes made in this pull request.
• [x] Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
• [x] Documentation: Have you updated relevant documentation Open WebUI Docs, or other documentation sources?
• [x] Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
• [x] Testing: Have you written and run sufficient tests for validating the changes?
• [x] Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
• [x] Prefix: To cleary categorize this pull request, prefix the pull request title, using one of the following:
  • BREAKING CHANGE: Significant changes that may affect compatibility
  • build: Changes that affect the build system or external dependencies
  • ci: Changes to our continuous integration processes or workflows
  • chore: Refactor, cleanup, or other non-functional code changes
  • docs: Documentation update or addition
  • feat: Introduces a new feature or enhancement to the codebase
  • fix: Bug fix or error correction
  • i18n: Internationalization or localization changes
  • perf: Performance improvement
  • refactor: Code restructuring for better maintainability, readability, or scalability
  • style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)
  • test: Adding missing tests or correcting existing tests
  • WIP: Work in progress, a temporary label for incomplete or ongoing work

Changelog Entry

Description

• i18n: Update Chinese translation