Fix typos in guides (#3951)
Fix typos in guides (#3951)


optikfluffel/phoenix,michalmuskala/phoenix,0x00evil/phoenix,phoenixframework/phoenix,phoenixframework/phoenix,nshafer/phoenix,nshafer/phoenix,optikfluffel/phoenix,nshafer/phoenix,optikfluffel/phoenix,eksperimental/phoenix,eksperimental/phoenix,phoenixframework/phoenix,michalmuskala/phoenix,rafbgarcia/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,0x00evil/phoenix,rafbgarcia/phoenix