.arcconfig

rename: quote hg commands in warnings

I think we usally use single quotes around hg commands in messages.

Differential Revision: https://phab.mercurial-scm.org/D4417

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}