Minor import and spelling updates

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Refinement of codebase with spelling corrections and minor code reorganization for clarity.

📊 Key Changes

• Removed unused platform import from detect.py.
• Moved math import from the top of train.py to where it's used.
• Corrected spelling mistakes across multiple comments and warning messages in utils/general.py.
• Improved the clarity of existing comments and docstrings.

🎯 Purpose & Impact

• 🚀 Code Hygiene: Elimination of unused imports and better placement of others improve the code maintainability and readability.
• ✅ Clarity & Communication: Spelling corrections and clearer comments ensure that the meaning is accurately conveyed, which benefits both user understanding and further development.
• 🧩 Non-Functional Refactoring: These changes are non-functional; they have no direct impact on the program's output or performance, but contribute to better software practices.

[glenn-jocher]

/rebase