Enhance CONTRIBUTING.md for VehiGo

[AditiTangri]

Description:

The current CONTRIBUTING.md provides a friendly and visual guide, but it can be expanded for clarity and completeness.

✅ Suggested Improvements:

• Include basic code style or formatting guidelines
• Use Consistent Emoji Headers
• Use fenced code blocks with language identifiers for syntax highlighting.
• Add a short checkbox list for contributors.
• Highlight important steps or warnings using blockquotes

Please assign this issue to me. I would like to contribute on this issue.

[github-actions]

🙏 Thank you for opening this issue!

We appreciate your effort in contributing to this project. Our team will review the details shortly.

🔎 Meanwhile, please ensure that you have:

• Reviewed the README.md for project setup and guidelines.
• Gone through the CONTRIBUTING.md to follow contribution standards.
• Read the CODE_OF_CONDUCT.md to maintain a respectful community.

⚠️ Kindly note: Please do not create a Pull Request until this issue has been properly assigned to you. This helps us keep contributions well-organized. 🚀

Thanks again for your contribution! ✨