fix: add missing `quit` cmd in `kong --help` msg
fix: add missing `quit` cmd in `kong --help` msg

skynet/kong,AnsonSmith/kong,chourobin/kong,paritoshmmmec/kong,sbuettner/kong,vmercierfr/kong,peterayeni/kong,ChristopherBiscardi/kong,bbalu/kong,Skyscanner/kong,ropik/kong,puug/kong,wakermahmud/kong