fix a typo in the README to showoff the default values
fix a typo in the README to showoff the default values

reevoo/virtus,kristianmandrup/virtus,JustMikey/virtus,artemeff/virtus,baojjeu/virtus,macressler/virtus,faucct/virtus,nuclearsandwich/virtus,dslh/virtus,solnic/virtus,lgierth/virtus,mallikarjunayaddala/virtus,hapiben/virtus,XescuGC/virtus