fixed note directive in io.ascii docs
fixed note directive in io.ascii docs

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