update repository key
update repository key

JohnMurga/linter,kaeluka/linter,shawninder/linter,steelbrain/linter,atom-community/linter,iam4x/linter,Arcanemagus/linter,levity/linter,AsaAyers/linter,josa42/Linter,UltCombo/linter,e-jigsaw/Linter,AtomLinter/Linter,DanPurdy/linter,elkeis/linter,blakeembrey/linter,mdgriffith/linter