Fix changelog heading
Fix changelog heading

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