external link to authors website in package citation

When i look at the dplyr R package citation page (Authors and Citation • dplyr ), each authors name is hyperlinked to their personal website.

How is this achieved? Is there documentation to explain?

I have asked this before, without satisfactory success. Any help much appreciated

well i cant find documentation but i see this is how it is done in the pkgdown website


authors:
  yourname:
    href: https://yoursite.com

to the _pkgdown.yml