Fix benchmark.py usage comment

[rusamentiaga]

Signed-off-by: Rubén Usamentiaga rusamentiaga@uniovi.es

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved usability in benchmarking script invocation.

📊 Key Changes

• Simplified the command for running benchmarks by changing the script path in the usage instructions.

🎯 Purpose & Impact

• Makes it easier for users to run benchmarks by providing a more intuitive command.
• Reduces the potential for user error when attempting to benchmark model performance.

[github-actions]

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[glenn-jocher]

@rusamentiaga PR is merged. Thank you for your contributions to YOLOv5 🚀 and Vision AI ⭐