[PATCH] doc: Use enum argument type to make links in protocol documentation

[Auke Booij]

On 6 November 2015 at 16:27,  <spitzak at gmail.com> wrote:
> From: Bill Spitzak <spitzak at gmail.com>

This is good preparation for when we'll get cross-interface enums.

Reviewed-by: Auke Booij <auke at tulcod.com>