Updated configuration documentation to better explain types
Updated configuration documentation to better explain types

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