Minor: Update p.returncode string
Minor: Update p.returncode string

graphicore/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,jessamynsmith/fontbakery,vitalyvolkov/fontbakery,moyogo/fontbakery,graphicore/fontbakery,moyogo/fontbakery,moyogo/fontbakery,graphicore/fontbakery,davelab6/fontbakery,vitalyvolkov/fontbakery,vitalyvolkov/fontbakery