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