Update README_cn.md

[KieraMengru0907]

Includes v6.2 updates

Signed-off-by: KieraMengru0907 108015280+KieraMengru0907@users.noreply.github.com

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to YOLOv5 documentation and classification model usage.

📊 Key Changes

• Improved Chinese README with better structure and updated information.
• Removed specific details about classification model training, replaced with more concise usage examples.
• Streamlined classification usage instructions, making them more accessible.

🎯 Purpose & Impact

• 📖 Documentation Clarity: The updates aim to clarify the Chinese README, making it easier for Chinese-speaking users to understand how to use YOLOv5.
• 🔍 Simplified Model Information: By removing excessive detail and focusing on key points, users can more quickly grasp how to utilize classification models.
• 💨 Ease of Use: Clear examples on how to train, validate, predict, and export models make it easier for both beginners and experts to deploy YOLOv5 models, potentially leading to wider adoption and more innovative applications.

[github-actions]

👋 Hello @KieraMengru0907, thank you for submitting a YOLOv5 🚀 PR! To allow your work to be integrated as seamlessly as possible, we advise you to:

• ✅ Verify your PR is up-to-date with upstream/master. If your PR is behind upstream/master an automatic GitHub Actions merge may be attempted by writing /rebase in a new comment, or by running the following code, replacing 'feature' with the name of your local branch:

git remote add upstream https://github.com/ultralytics/yolov5.git
git fetch upstream
# git checkout feature  # <--- replace 'feature' with local branch name
git merge upstream/master
git push -u origin -f

• ✅ Verify all Continuous Integration (CI) checks are passing.
• ✅ Reduce changes to the absolute minimum required for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." -Bruce Lee