Include conda channel update note in docs
Include conda channel update note in docs

lpsinger/astropy,StuartLittlefair/astropy,stargaser/astropy,larrybradley/astropy,astropy/astropy,kelle/astropy,saimn/astropy,astropy/astropy,larrybradley/astropy,MSeifert04/astropy,stargaser/astropy,AustereCuriosity/astropy,kelle/astropy,pllim/astropy,kelle/astropy,bsipocz/astropy,MSeifert04/astropy,lpsinger/astropy,mhvk/astropy,AustereCuriosity/astropy,larrybradley/astropy,funbaker/astropy,astropy/astropy,AustereCuriosity/astropy,DougBurke/astropy,AustereCuriosity/astropy,funbaker/astropy,dhomeier/astropy,MSeifert04/astropy,funbaker/astropy,dhomeier/astropy,pllim/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,pllim/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,larrybradley/astropy,bsipocz/astropy,StuartLittlefair/astropy,DougBurke/astropy,astropy/astropy,saimn/astropy,StuartLittlefair/astropy,mhvk/astropy,mhvk/astropy,kelle/astropy,DougBurke/astropy,StuartLittlefair/astropy,lpsinger/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,bsipocz/astropy,mhvk/astropy,dhomeier/astropy,lpsinger/astropy,astropy/astropy,saimn/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,dhomeier/astropy,larrybradley/astropy,kelle/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,saimn/astropy,funbaker/astropy,dhomeier/astropy,stargaser/astropy,saimn/astropy,stargaser/astropy