Arthur, would you be OK with adding a new CSS class to
<https://srfi.schemers.org/srfi.css> for links whose URL is shown in the
document itself as the link text? I.e. something like:

<a class="url" href="https://example.com/foo">example.com/foo</a>

Whichever CSS class name and typography you prefer are fine. It could be
in a monospace font, and CSS before and after pseudo-elements could be
used to put angle brackets around the URL or something. But these are
just suggestions.