fix implementation of "font has 'EURO SIGN' character" test
fix implementation of "font has 'EURO SIGN' character" test

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