Update Vercel deployment documentation (#9560)
Update Vercel deployment documentation (#9560)


jdcrensh/create-react-app,jdcrensh/create-react-app,facebookincubator/create-react-app,jdcrensh/create-react-app,facebookincubator/create-react-app,jdcrensh/create-react-app,facebookincubator/create-react-app