docs: def parse_update(prs, conn):
      """Update a record.
  
      Arguments:
  
          prs:  parser object of argparse
          conn: dictionary of connection information
      """
  
      prs_update = prs.add_parser(
          'update', help='update record of specific zone')
      set_option(prs_update, 'domain')
      set_option(prs_update, 'update')
      conn_options(prs_update, conn)
      prs_update.set_defaults(func=update)