fix documentation example on PhoneInput
fix documentation example on PhoneInput

ryanfox1985/formtastic,paulodiovani/formtastic,nishaya/formtastic,ryanfox1985/formtastic,justinfrench/formtastic,sideci-sample/sideci-sample-formtastic,thenthen8515/formtastic,Guestfolio/formtastic,Davidzhu001/formtastic,ConferenceCloud/formtastic,Guestfolio/formtastic,ConferenceCloud/formtastic,paulodiovani/formtastic,mikz/formtastic,ryanfox1985/formtastic,thenthen8515/formtastic,EndingChaung/formtastic,nishaya/formtastic,EndingChaung/formtastic,Davidzhu001/formtastic,Baltazore/formtastic,justinfrench/formtastic,justinfrench/formtastic,mikz/formtastic