[Style] Enhance the hover color of navbar

[Vaishnavi1047]

Category of documentation update

The gray hover effect doesn't quite match the overall vibe of the website.
Thus changing it will something that looks pleasant to see .

Describe the change you think might work

No response

Checklist

• I have checked the existing issues.
• I follow Contributing Guidelines of this project.
• I am a GSSOC'24 contributor.
• I am a IWOC'24 contributor.
• I am a JWOC'24 contributor.
• I am a SWOC'24 contributor.

Code of Conduct

• I agree to follow this project's "Code of Conduct".

[github-actions]

Hey @Vaishnavi1047, Welcome to the project Beautiify! 🎊
Thanks for opening an issue! 🙌 Please wait for the issue to be assigned. Happy Coding!! ✨

[saurabhsingh720]

@Vaishnavi1047
Can u give any idea how it looks like after your change

[Rakesh9100]

Any update on the question asked @Vaishnavi1047