Minor docs update

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced clarity in model deletion documentation 💥

📊 Key Changes

• Updated the documentation to clarify how to permanently delete a model using hard=True.

🎯 Purpose & Impact

• Purpose: The change aims to make it clearer to developers and users how to perform a hard delete of a model. The inclusion of backticks () around hard=True` improves the readability and highlights the code portion within the text.
• Impact: This helps prevent accidental deletion of valuable models and ensures that users are aware of the irreversible nature of the action. It promotes better understanding and safer usage patterns among all users of the SDK. 🛡️🔍

This minor, yet significant, documentation update emphasizes the importance of clarity and caution when dealing with data deletion, ensuring that all users, regardless of their expertise level, can easily grasp the concept and implications.