message: docs: add vercel to footer
diff: @@ -4,6 +4,7 @@ import { IoLogoTwitter, IoLogoLinkedin } from "react-icons/io"
  import { FaYoutube } from "react-icons/fa"
  import { MdEmail } from "react-icons/md"
  import { DiGithubBadge } from "react-icons/di"
  +import { VercelCallout } from "./vercel-callout"
  type FooterLinkProps = {
  icon?: React.ElementType
  @@ -84,6 +85,7 @@ export const Footer = () => (
  <FooterLink key={link.href} {...link} />
  ))}
  </Stack>
  + <VercelCallout />
  </Box>
  )
  