Tweak commit msg linter
Tweak commit msg linter

* (cosmetic) clean up some code style
* tweak output so it's easier for me to distinguish between the
  commit message summary line and what the linter pulled from
  bugzilla

rlr/fjord,lgp171188/fjord,Ritsyy/fjord,hoosteeno/fjord,lgp171188/fjord,hoosteeno/fjord,rlr/fjord,rlr/fjord,staranjeet/fjord,Ritsyy/fjord,Ritsyy/fjord,staranjeet/fjord,hoosteeno/fjord,staranjeet/fjord,staranjeet/fjord,mozilla/fjord,mozilla/fjord,hoosteeno/fjord,lgp171188/fjord,lgp171188/fjord,mozilla/fjord,Ritsyy/fjord,mozilla/fjord,rlr/fjord