Added a clarifying comment in the code [skip ci]
Added a clarifying comment in the code [skip ci]

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