Zeit is now Vercel

[filiptronicek]

As the company has announced, that they are changing their name to Vercel, the site footer should reflect that.

jsperf.com/templates/partials/footer.hbs

Line 7 in 479543e

<p>Hosting generously provided by <a href="https://m.do.co/c/b426e15331e8">DigitalOcean</a> and <a href="https://zeit.co/">Zeit</a></p>