[Handbook] Fix title overflow on Community handbook

[Rajesh-Nagarajan-11]

Description

This PR fixes #6626 and #6676

Notes for Reviewers
Updated the relevant CSS in the Handbook section.

Ensured responsive design compatibility.

Tested on different screen widths to verify the fix.

Before :

After :

Signed commits

• Yes, I signed my commits.

[l5io]

🚀 Preview for commit 90eef96 at: https://6887ab2cd01a5f40c2e2816f--layer5.netlify.app

[Namanv0509]

@Rajesh-Nagarajan-11 The issue mentioned was assigned to someone else ig , pls comment on an issue get it assigned and then only work on it.

Follow this -> https://github.com/layer5io/layer5/blob/master/CONTRIBUTING.md

[Rajesh-Nagarajan-11]

@Namanv0509 i'm sorry I wasn't checked whether it was assigned or not

[Rajesh-Nagarajan-11]

@Namanv0509 It was assigned 15 days ago , It seems no one working on this

[l5io]

🚀 Preview for commit 3ed7c37 at: https://6888eb7c98f04e1d10315275--layer5.netlify.app

[l5io]

🚀 Preview for commit e52f805 at: https://6888ef47cf970a13b2a9f782--layer5.netlify.app

[vr-varad]

Thank you for your contribution!
Let's discuss this during the website call today at 5:30 PM IST | 7 AM CT

Add it as an agenda item to the meeting minutes, if you would :)

[l5io]

🚀 Preview for commit 465597a at: https://6890a0299356001ea838c923--layer5.netlify.app

[Rajesh-Nagarajan-11]

@FaheemOnHub Kindly review this PR

[l5io]

🚀 Preview for commit ab91540 at: https://6892830493051528a4e9f9c8--layer5.netlify.app