Inside Ultralytics video https://youtu.be/Zgi9g1ksQHc

[glenn-jocher]

Updates YouTube Usage examples to our new Inside Ultralytics video at https://youtu.be/Zgi9g1ksQHc 😃

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Updated example commands and YouTube video link in documentation and scripts.

📊 Key Changes

• Changed example image filename from file.jpg to img.jpg.
• Changed example video filename from file.mp4 to vid.mp4.
• Updated the YouTube video link in example commands for testing purposes.

🎯 Purpose & Impact

• Enhances clarity in documentation by using more intuitive example filenames.
• Presents a more relevant YouTube video example ensuring users have a working testing link.
• Helps new users understand how to use the model for various input sources more easily.