Update Discord invite to https://ultralytics.com/discord

[glenn-jocher]

🤖 Generated by Copilot at 8bd5ba6

Summary

🌐📝🎨

Updated the Discord URL and logo in various documentation files, including README.md, README.zh-CN.md, .github/ISSUE_TEMPLATE/config.yml and tutorial.ipynb. This change reflects the new Discord server and the custom domain for the YOLOv5 community.

Sing, O Muse, of the swift and skillful changes
That the wise and generous Ultralytics made
To their glorious and renowned YOLOv5 project
That helps many mortals detect objects with ease.

Walkthrough

• Update Discord URL to use custom domain https://ultralytics.com/discord in four files: .github/ISSUE_TEMPLATE/config.yml, README.md, README.zh-CN.md and tutorial.ipynb (link, link, link, link, link, link, link, link, link, link)
• Replace Discord logo with new version in two files: README.md and README.zh-CN.md (link, link, link, link)

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Update of Discord links and communication channel information in the Ultralytics YOLOv5 repository.

📊 Key Changes

• Updated the Discord invitation URLs in various documentation files, including issue templates and readmes.
• Consolidated the links to point to a new dedicated Discord URL hosted on Ultralytics' domain (https://ultralytics.com/discord).

🎯 Purpose & Impact

• 🤝 Ensures users have consistent and reliable access to the Ultralytics community for support and discussions.
• 🔗 Simplicity with a single, easy-to-remember Discord link that routes through the Ultralytics domain.
• 🌐 May assist with web analytics and user experience by tracking the engagement through the company’s domain.

Potential impact on users consists of a smoother transition to Ultralytics' social platforms and a central hub for community interactions, fostering a vibrant user community. 🌐👥