Update the Twitter Logo to the new X Logo

What is the new or updated feature that you are suggesting?

Upgrade the website's Twitter logo by replacing the outdated icon with the new and sleek "X" logo.

What documentation changes are needed to explain this?

This small design enhancement will help the website stay up-to-date with the latest branding and provide a fresh look to users.

Screenshots:

Note to Reviewer:
I would like to work on this issue, can you assign it to me?

Also, could you label it as hacktoberfest and hacktoberfest-accepted ? Thanks!