[PATCH] doc: arrange search prefix documentation in a definition list

[David Bremner]

Jani Nikula <jani at nikula.org> writes:

> Having first a list of prefixes followed by detailed descriptions was
> viable when we didn't have all that many prefixes. Now, arranging the
> prefix descriptions in a definition list makes more sense.
>
> While at it, include all the supported prefix forms, especially some
> missing regex ones.

pushed to master