Add automatic rel="me" to Mastodon social link

[DaniSancas]

Description

According to the official documentation this is the simplest way to verify an account on Mastodon instances.

Motivation

This PR would enable automatic "check mark" on Mastodon without needing to extend/overwrite the macro template while using the Abridge Theme.

[netlify[bot]]

✅ Deploy Preview for abridge ready!

Name	Link
🔨 Latest commit	cf3ddee4fdc2df004cdcce842188c1dcef5fc128
🔍 Latest deploy log	https://app.netlify.com/sites/abridge/deploys/63b9782daeb7dd00082f493a
😎 Deploy Preview	https://deploy-preview-99--abridge.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[Jieiku]

Thanks!