message: chore(masthead): fix to nav type proptype definition
  ### Related Ticket(s)
  No related issue
  ### Description
  Spotted a misaligned proptype definition for `MastheadSearch`.
  ### Changelog
  **Changed**
  MastheadSearch propTypes
diff: @@ -434,7 +434,7 @@ MastheadSearch.propTypes = {
  /**
  * navigation type for autoids
  */
  - navType: PropTypes.oneOf(['default, alt, eco']),
  + navType: PropTypes.oneOf(['default', 'alt', 'eco']),
  };
  MastheadSearch.defaultProps = {
  