Minor typo fix in markdown (#3511)
Minor typo fix in markdown (#3511)


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