Added header casing note (#3459) (#3470)
Added header casing note (#3459) (#3470)


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