fix typos (thanks @JMerrill !)
fix typos (thanks @JMerrill !)

ErykB2000/aurelia-converters-sample,ErykB2000/aurelia-converters-sample,jdanyow/aurelia-converters-sample,jdanyow/aurelia-converters-sample,jdanyow/aurelia-converters-sample,ErykB2000/aurelia-converters-sample,jdanyow/aurelia-converters-sample,ErykB2000/aurelia-converters-sample