Update train.py comment to 'Model attributes'

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update terminology in train.py from 'parameters' to 'attributes'.

📊 Key Changes

• Changed the comment referring to model "parameters" to "attributes" for clarity within the train.py script.

🎯 Purpose & Impact

• Aims to improve code documentation by using more precise language, enhancing the understanding for developers maintaining or extending the code.
• This change is minor and likely has no direct impact on end-users but reflects Ultralytics' attention to detail in code quality and readability. 📝🔍