added back-to-top scroll up in readme

[T-Fathima]

Pull Request Template for GSoC 2024

Related Issue

closes: #509

Description of Changes

I have added a back-to-top scroll up button in the readme file for easier navigation in lengthy readme files.

Type of Pull Request

• Bug Fix
• New Feature
• Performance Improvement
• Documentation Update
• Code Refactoring
• Security Enhancement
• Other (Specify): _______________

Checklist for Contributor

• I have reviewed my code before submission.
• I have read and followed the project's Contribution Guidelines.
• I have tested the code thoroughly.
• I have attached related issue numbers, screenshots, or videos (if applicable).
• I have added comments to my code where necessary for clarity.
• I have checked the existing code base and my changes do not introduce any breaking changes.
• My PR addresses only one issue; I have created separate PRs for other issues.
• I have ensured that the PR does not include unrelated files.
• I am mindful of the project's coding standards and best practices.

@dhairyagothi Please review and merge it.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
station-guide	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 6, 2024 5:44pm
station-guide-backend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 6, 2024 5:44pm

[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, please ensure that your changes align with our CONTRIBUTING.md. If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

[github-actions]

🎉 Your pull request has been successfully merged! 🎉 Thank you for your valuable contribution to Station Guide. Your efforts are greatly appreciated. Feel free to reach out if you have any more contributions or if there's anything else we can assist you with. Keep up the fantastic work! 🚀