Update autobatch.py

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Optimization of batch-size selection logging in the autobatch utility function.

📊 Key Changes

• Altered the print statement for clarity in logging the chosen batch-size during auto-tuning.

🎯 Purpose & Impact

• Purpose: To enhance the readability of the log output when auto-tuning batch sizes.
• Impact: Users will experience clearer log messages, facilitating better understanding and debugging during model setup and training. No impact on the functional performance of the model itself.