fix docs usage/cli.md page header

[RizwanMunawar]

@glenn-jocher

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated documentation to streamline the description of using Ultralytics YOLO via the command line.

📊 Key Changes

• Modified the sentence structure in the documentation's description for clarity.

🎯 Purpose & Impact

• Enhances the readability and understanding of the documentation for users learning to use the CLI for YOLO.
• No direct impact on functionality, but improves the user experience when interacting with the docs.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f56dd0f) 76.98% compared to head (44e55e9) 76.98%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7776   +/-   ##
=======================================
  Coverage   76.98%   76.98%           
=======================================
  Files         117      117           
  Lines       14396    14396           
=======================================
  Hits        11083    11083           
  Misses       3313     3313           

Flag	Coverage Δ
Benchmarks	35.60% <ø> (ø)
GPU	39.43% <ø> (ø)
Tests	72.03% <ø> (ø)

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