Fix broken link to mix tasks in Ecto guide (#2520)
Fix broken link to mix tasks in Ecto guide (#2520)


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