Update hub.ipynb with Ruff reformat

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

This PR updates the 'Ultralytics HUB' Jupyter notebook, enhancing the documentation and setup instructions.

📊 Key Changes

• Added multilingual documentation links for better accessibility.
• Improved documentation layout and instructions for setting up and running YOLO models using Ultralytics HUB.
• Reformatted some code cells for clarity and ease of use.

🎯 Purpose & Impact

• Enhanced User Experience: The improved documentation and multilingual support make it easier for users worldwide to understand and use Ultralytics HUB.
• Easier Setup: Clearer setup instructions and code formatting help users get started with training YOLO models more quickly and efficiently.

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