Update format.yml

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated the GitHub workflow to enhance formatting checks with new features.

📊 Key Changes

• Changed the GitHub Action used for formatting from ultralytics/actions@main to ultralytics/actions@check_urls.

🎯 Purpose & Impact

• 🛠️ Enhanced Efficiency: This update improves the automation of code formatting checks, potentially catching more issues early.
• 🔍 URL Checking: Includes URL validation as part of the formatting process, which helps prevent broken links and ensures better documentation quality.
• 🚀 Improved Workflow: Streamlines the development process by automatically handling more aspects of code quality and maintenance.

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting an ultralytics/velocity 🚀 PR! To ensure a seamless integration of your work, please review the following checklist:

• ✅ Define a Purpose: Clearly explain the purpose of your fix or feature in your PR description, and link to any relevant issues. Your description looks clear, but ensure your commit messages adhere to the project's conventions.
• ✅ Synchronize with Source: Confirm your PR is synchronized with the ultralytics/velocity main branch. If it’s behind, update it by clicking the 'Update branch' button or by running git pull and git merge main locally.
• ✅ Ensure CI Checks Pass: Verify all Ultralytics Continuous Integration (CI) checks are passing. If any checks fail, please address the issues.
• ✅ Update Documentation: Update the relevant documentation for any new or modified features, especially given the changes to URL checking.
• ✅ Add Tests: If applicable, include or update tests to cover your changes, and confirm that all tests are passing.
• ✅ Sign the CLA: Please ensure you have signed our Contributor License Agreement if this is your first Ultralytics PR by writing "I have read the CLA Document and I sign the CLA" in a new message.
• ✅ Minimize Changes: Limit your changes to the minimum necessary 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

For more guidance, please refer to our Contributing Guide. Don’t hesitate to leave a comment if you have any questions. An Ultralytics engineer will review your PR soon. Thank you for contributing to Ultralytics! 🌟