(doc) Update to prefer # rather than GH-
(doc) Update to prefer # rather than GH-

GH- is specific to GitHub, where as, # works across different version
control systems, so it makes sense to get into the habit of using
something that works everywhere.

TheBigBear/choco,jberezanski/choco,TheBigBear/choco,TheBigBear/choco,jberezanski/choco,jberezanski/choco