update challengers.js
update challengers.js

arthurvasconcelos/write-code-every-day,arthurvasconcelos/write-code-every-day,raphamorim/write-code-every-day,pablobfonseca/write-code-every-day,pablobfonseca/write-code-every-day,raphamorim/write-code-every-day,arthurvasconcelos/write-code-every-day,pablobfonseca/write-code-every-day,raphamorim/write-code-every-day