message: fix: error in guessFirmwareFormat
diff: @@ -7,7 +7,6 @@ const {
  Driver,
  NodeStatus,
  InterviewStage,
  - FirmwareFileFormat,
  extractFirmware
  } = require('zwave-js')
  const utils = reqlib('/lib/utils.js')
  @@ -1664,7 +1663,7 @@ function guessFirmwareFormat (filename, firmware) {
  ) {
  return 'aeotec'
  } else if (/\.(hex|ota|otz)$/.test(filename)) {
  - return FirmwareFileFormat[filename.slice(-3)]
  + return filename.slice(-3)
  } else {
  throw new Error('could not detect firmware format')
  }
  