fix output_devices_json
fix output_devices_json

jgosmann/Karabiner-Elements-Neo,jgosmann/Karabiner-Elements-Neo,tekezo/Karabiner-Elements,tekezo/Karabiner-Elements,tekezo/Karabiner-Elements,jgosmann/Karabiner-Elements-Neo,jgosmann/Karabiner-Elements-Neo,jrolfs/Karabiner-Elements,epegzz/Karabiner-Elements,epegzz/Karabiner-Elements,jrolfs/Karabiner-Elements,epegzz/Karabiner-Elements,jrolfs/Karabiner-Elements,tekezo/Karabiner-Elements,epegzz/Karabiner-Elements,jrolfs/Karabiner-Elements