corrects the use of backticks in docs
corrects the use of backticks in docs

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