fix credit in CHANGELOG.md
fix credit in CHANGELOG.md

sgentle/yargs,yargs/yargs,etiktin/yargs,bcoe/yargs,jvdm/yargs,ammeep/yargs,zkat/yargs,nexdrew/yargs,LoicMahieu/yargs,tepez/yargs,ggoodman/yargs,geophree/yargs,ammeep/yargs,nexdrew/yargs,yargs/yargs,ChristianMurphy/yargs,elas7/yargs,jean-emmanuel/yargs,yargs/yargs,jean-emmanuel/yargs,dkoleary88/yargs,tepez/yargs,geophree/yargs,elas7/yargs,oti/yargs,dkoleary88/yargs,bcoe/yargs