Update Issue Templates with 💡 ProTip!

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved issue templates for bug reports and questions.

📊 Key Changes

• Changed the placeholder text in the bug report template to support block formatting for better clarity.
• Updated the code placeholder in bug reports to be inside a code block for easier readability.
• Simplified placeholder instructions by removing verbose tips in both bug report and question templates.

🎯 Purpose & Impact

• Enhanced Readability: By using code blocks, users can more easily format their example code, leading to clearer, more understandable issues. 📝
• Focused Information: Clear and concise placeholders encourage users to provide only the necessary information, making it easier for maintainers to diagnose and address issues. 🔍
• User-Friendly Reporting: Streamlining the placeholders lowers the barrier for reporting issues, potentially increasing community engagement and contributions. 🤝