message: replace default config kill with shutdown
  fixes
diff: @@ -92,8 +92,8 @@ export const defaultConfig: Config = {
  exit: false,
  },
  {
  - icon: 'skull',
  - command: '[!KILL]',
  + icon: 'power-off',
  + command: '[!SHUTDOWN]',
  color: '#e84118',
  confirm: true,
  exit: false,
  