fix broken doctests
fix broken doctests

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