Update links in CONTRIBUTING.md
Update links in CONTRIBUTING.md

iamjarvo/faraday,luvtechno/faraday,flower-pot/faraday,santiagodoldan/faraday,pvdb/faraday,prcongithub/faraday,lostisland/faraday,flower-pot/faraday,mehulkar/faraday,ngpestelos/faraday,hrysd/faraday,AvaelKross/faraday,zanker/faraday,nevans/faraday,davoclavo/faraday,zhaoxl/faraday,daviswahl/faraday,daviswahl/faraday,apepper/faraday,ngpestelos/faraday,mehulkar/faraday,hstrowd/faraday,engineyard/faraday,ekampp/faraday,hstrowd/faraday,coinbase/faraday,hrysd/faraday,spyofchina/faraday,engineyard/faraday,nevans/faraday,stayhero/faraday,ru-faraon/Faraday-is-an-HTTP-client,lostisland/faraday,davidcornu/faraday,jhass/faraday,jhass/faraday,ekampp/faraday,iamjarvo/faraday,davidcornu/faraday,luvtechno/faraday,customink/faraday,O-I/faraday,mauricionr/faraday,zanker/faraday,spyofchina/faraday,coinbase/faraday,davoclavo/faraday,grosser/faraday,customink/faraday,jrafanie/faraday,AvaelKross/faraday,apepper/faraday,mauricionr/faraday,pvdb/faraday,jrafanie/faraday,ru-faraon/Faraday-is-an-HTTP-client,santiagodoldan/faraday,O-I/faraday,grosser/faraday,stayhero/faraday,prcongithub/faraday,zhaoxl/faraday