Fix sphinx references to SkyCoord
Fix sphinx references to SkyCoord

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