Issue #109 solved. Renamed About section to Collections, And added new About page.

[iAmDiksha]

Description

Renamed the About.html to Collections.html. Also, added a new "About" page to reflect the site's purpose, providing users with insights about Retro and its offerings.

Screenshots / videos (if applicable)

Retro.webm

Checklist

• I have gone through the contributing guide
• I have updated my branch and synced it with project main branch before making this PR
• I have performed a self-review of my code
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have commented my code, particularly in hard-to-understand areas.

[github-actions]

Great job, @iAmDiksha! 🎉 Thank you for submitting your pull request. Your contribution is valuable and we appreciate your efforts to improve our project.We will promptly review your changes and offer feedback. Keep up the excellent work! Kindly remember to check our contributing guidelines

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[github-actions]

🎉 Your pull request has been successfully merged! 🎉 Thank you for your contribution to our project. Your efforts are greatly appreciated. Keep up the fantastic work! 🚀