Update README.md with Discord badge

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

This PR appears to be more of a placeholder or procedural action, with no actual code changes involved. 🚫

📊 Key Changes

• None. The PR doesn't introduce or alter any lines of code.

🎯 Purpose & Impact

• Purpose: Given the lack of changes, the purpose might be administrative or a step in a larger process that doesn't involve direct code modification. For example, it could be for tracking, discussion, or preparation for future updates. 📝
• Impact: Since there are no code changes, there's no direct impact on the software's functionality or on the user experience. This could be a behind-the-scenes move that sets the stage for future updates or changes. 🛠️

In the world of software development, not every PR leads directly to flashy new features or bug fixes - some are about the groundwork for what's coming next! Stay tuned. 🌈

[sourcery-ai]

We have skipped reviewing this pull request. We don't currently review documentation changes - Let us know if you'd like us to change this.