feat/Add X.com social link before Discord in docs navbar

[e-kibet]

Summary

(If you have not already please refer to the contributing guideline as described
here)

• Tell us about the problem your pull request is solving.
  Adds an X.com social icon/link to the docs navbar and places it before Discord.
• Are there any open issues that are related to this?
  No related issues.
• Is this PR dependent on PRs in other repos?
  No.

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Your PR will be reviewed by a core team member and they will work with you to get your changes merged in a timely manner. If merged your PR will automatically be added to the changelog in the next release.

If this is a new feature, please remember to add the appropriate documentation in their respective pages in the docs folder.

Thanks for contributing to Feathers! ❤️

[daffl]

Thank you for the pull request. However, there is no official Feathers X account and the last account that was using the handle was a crypto scam so I'm a little hesitant to officially add it.

[e-kibet]

@daffl thank you for checking the PR. In that case does it mean we need to create an official x account for feathersjs