Fix grammar in plug guide (#3795)
Fix grammar in plug guide (#3795)


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