Document the use of `Phoenix.Tracker` instead of `Phoenix.Presence` (#3198)
Document the use of `Phoenix.Tracker` instead of `Phoenix.Presence` (#3198)


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