fix implementation of "Does full font name begin with the font family name?"
fix implementation of "Does full font name begin with the font family name?"

moyogo/fontbakery,graphicore/fontbakery,graphicore/fontbakery,graphicore/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,moyogo/fontbakery,googlefonts/fontbakery