Update links.yml

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced GitHub workflow to log link-checking results directly into the workflow summary output. 🛠️📋

📊 Key Changes

• Added tee -a $GITHUB_STEP_SUMMARY to the link-checking steps for .html and .ipynb files.

🎯 Purpose & Impact

• Purpose: This change ensures that the results of the link-checking process are readily available in the workflow summary, improving visibility and debugging convenience.
• Impact: Users and maintainers can quickly access link-validation results directly from workflow summary logs, streamlining the review process and reducing the need to dig through raw logs. 🖥️✅