Update README.md

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update to the README file with minor formatting changes.

📊 Key Changes

• Added extra line spacing in the README file for improved readability.

🎯 Purpose & Impact

• 🧹 Improved Readability: The formatting tweaks make the README easier to read, especially for those new to the project.
• 🚀 Enhanced Presentation: These changes contribute to a cleaner presentation, helping users quickly find important information about the project.

[UltralyticsAssistant]

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

• ✅ Define a Purpose: Make sure the purpose of your README update is clearly explained in the PR description. If relevant, link to any related issues.
• ✅ Synchronize with Source: Ensure your PR is in sync with the main branch of ultralytics/velocity. If it is not, please update it by clicking the 'Update branch' button or perform a git pull followed by git merge main on your local setup.
• ✅ Ensure CI Checks Pass: Verify that all Ultralytics Continuous Integration (CI) checks pass successfully. If any checks fail, please investigate and resolve the issues.
• ✅ Documentation Updates: As this involves documentation, ensure that the relevant updates are coherent and contribute to clarity, as intended. Consider eye-catching and precise changes such as enhancing readability, as you have done.
• ✅ Sign the CLA: Please make sure you've signed the Contributor License Agreement. If this is your first PR to Ultralytics, acknowledge it by stating "I have read the CLA Document and I sign the CLA" in a comment.
• ✅ Minimize Changes: Aim to keep alterations to the absolute essentials for making improvements to the documentation. "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 detailed contributor guidelines, please see our Contributing Guide. If you encounter any questions or concerns, feel free to add a comment. An Ultralytics engineer will join the review shortly. Thanks for your contribution! 📚✨