Minor tweaks to docs
Minor tweaks to docs

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