Fix publish.yml repo name

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Minor tweak to enhance Slack notifications for GitHub Actions.

📊 Key Changes

• Changed the Slack notification message format to include the repository name in pip package details.

🎯 Purpose & Impact

• Clarity: Provides clearer information in Slack notifications about which repository a newly published pip package belongs to.
• Improved Tracking: Makes it easier for teams to track and identify the source repository of new package versions, improving workflow transparency.