Update doc and errors of Phoenix.ChannelTest
Update doc and errors of Phoenix.ChannelTest

Joe-noh/phoenix,nshafer/phoenix,dmarkow/phoenix,keathley/phoenix,michalmuskala/phoenix,evax/phoenix,Kosmas/phoenix,eksperimental/phoenix,dmarkow/phoenix,nshafer/phoenix,optikfluffel/phoenix,mschae/phoenix,optikfluffel/phoenix,eksperimental/phoenix,optikfluffel/phoenix,Gazler/phoenix,phoenixframework/phoenix,keathley/phoenix,pap/phoenix,jwarwick/phoenix,0x00evil/phoenix,phoenixframework/phoenix,jwarwick/phoenix,mitchellhenke/phoenix,mitchellhenke/phoenix,nshafer/phoenix,0x00evil/phoenix,evax/phoenix,mschae/phoenix,pap/phoenix,Kosmas/phoenix,rafbgarcia/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,michalmuskala/phoenix,Gazler/phoenix,phoenixframework/phoenix,rafbgarcia/phoenix,Joe-noh/phoenix