fix typo

    '''

    parser = argparse.ArgumentParser()

    parser.add_argument('config_file', help='.yaml config file for simulation settings.')

    parser.add_argument('-c', '--config_dir', help='Directory that houses the ,yaml config file.')

    parser.add_argument('-c', '--config_dir', help='Directory that houses the .yaml config file.')

    parser.add_argument('-d', '--data_dir', help='Directory that houses the input data.')

    parser.add_argument('-w', '--work_dir', help='The path for output.')

    return parser.parse_args()