Add discord links

[glenn-jocher]

@taliabender YOLOv5 Discord links added to README.md and README.zh-CN.md

🤖 Generated by Copilot at df3a02a

Summary

📝🌐🚀

This pull request improves the README files for YOLOv5 in both English and Chinese, by adding more useful links, logos, and information for the users and contributors. It also updates the Chinese translation to reflect the latest changes in the English version.

Sing, O Muse, of the glorious deeds of YOLOv5,
The swift and mighty detector of objects in images,
That by the skill of Ultralytics was brought to life,
And by the wise and generous contributors was enhanced.

Walkthrough

• Add Ultralytics and Discord logos and links to the top and bottom of the README files (link, link, link, link)
• Update the introduction paragraphs of the README files to include the YOLOv5 documentation, GitHub issue template, and Discord invite (link, link)
• Remove the Ultralytics Community Forum link and emphasize GitHub Issues and Discord channels as the preferred contact methods in the README files (link, link)

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to the README for better community engagement and support.

📊 Key Changes

• Added links to YOLOv5 documentation and GitHub issue tracker for user support.
• Introduced a link to join the Discord community for discussions.
• Updated Enterprise License request link with a markdown format.
• Included new Discord social icon and link in the socials section.

🎯 Purpose & Impact

• 📚 Improved Documentation Access: By providing a direct link to the docs, users can find detailed information on YOLOv5 more easily, enhancing the learning experience.
• 🤝 Enhanced Community Support: Promoting the Discord community encourages interaction, timely support, and sharing among users and developers.
• ✨ Streamlined Experience: Markdown links offer a cleaner and more standardized way to access licensing information.
• 🌐 Social Engagement: New Discord icons serve as visual invites, potentially increasing community memberships and user support networks.