chore(go): run go fmt on core test files

internal/homesick/core/list_test.go

@@ -69,4 +69,4 @@ func (s *ListSuite) TestList_OutputsSortedCastlesWithRemoteURLs() {
 			"zomg git://github.com/technicalpickles/zomg.git\n",
 		s.stdout.String(),
 	)
-}
+}

internal/homesick/core/track_test.go

@@ -20,7 +20,7 @@ type TrackSuite struct {
 	app      *core.App
 }
 
-//NB: this has nothing to do with jogging
+// NB: this has nothing to do with jogging
 func TestTrackSuite(t *testing.T) {
 	suite.Run(t, new(TrackSuite))
 }