Summary: @btrahan asked about this but I gave the wrong answer. These
currently do not turn into links. I think they might have in the past,
but if they did the rule is a little weird and feels specific to my
use. We can reexamine this at some point, but for now just make the
links work in a normal, reasonable sort of way.
Auditors: btrahan
Summary: ...and fix an error where lines that start with ##X## are rendering incorrectly by switching to alternate syntax `X`. Fixes T5806.
Test Plan: read the docs and they looked good
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T5806
Differential Revision: https://secure.phabricator.com/D10165