Fix missing link to ecto in context guide (#719)
Fix missing link to ecto in context guide (#719)


0x00evil/phoenix,stevedomin/phoenix,michalmuskala/phoenix,rafbgarcia/phoenix,optikfluffel/phoenix,phoenixframework/phoenix,pap/phoenix,Kosmas/phoenix,michalmuskala/phoenix,Joe-noh/phoenix,trarbr/phoenix,mschae/phoenix,keathley/phoenix,evax/phoenix,phoenixframework/phoenix,pap/phoenix,rafbgarcia/phoenix,Gazler/phoenix,stevedomin/phoenix,Kosmas/phoenix,gjaldon/phoenix,trarbr/phoenix,Gazler/phoenix,Joe-noh/phoenix,0x00evil/phoenix,phoenixframework/phoenix,mschae/phoenix,mobileoverlord/phoenix,jwarwick/phoenix,nshafer/phoenix,bsmr-erlang/phoenix,gjaldon/phoenix,0x00evil/phoenix,nshafer/phoenix,mobileoverlord/phoenix,keathley/phoenix,mitchellhenke/phoenix,nshafer/phoenix,jwarwick/phoenix,eksperimental/phoenix,eksperimental/phoenix,dmarkow/phoenix,bsmr-erlang/phoenix,optikfluffel/phoenix,evax/phoenix,mitchellhenke/phoenix,rafbgarcia/phoenix,dmarkow/phoenix,korobkov/phoenix,korobkov/phoenix,optikfluffel/phoenix