Update links.yml

[glenn-jocher]

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🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Refactoring GitHub action workflow commands for better code readability.

📊 Key Changes

• Reformatted the lychee link checker command by splitting it into multiple lines.
• Ensured each option and input file pattern is on a separate line.

🎯 Purpose & Impact

• Improved Readability: The change enhances the clarity of the GitHub action configuration, making it easier to read and maintain.
• Ease of Maintenance: With clearer syntax, future updates or troubleshooting efforts will be more straightforward.
• Minimal User Impact: There is no direct functionality impact on end-users. This update primarily benefits developers and maintainers of the repository.