changed run call in bs1770demo

import copy

import logging

import re

import subprocess as sp

from pathlib import Path

from tempfile import TemporaryDirectory

from typing import Optional, Tuple, Union

        binary = find_binary("bs1770demo")

    # checking if the new binary (with '-rms') is used

    result = sp.run(str(binary), shell=True, stdout=sp.PIPE, stderr=sp.PIPE)

    result_stdout = result.stdout.decode("utf-8")

    if "-rms" not in result_stdout:

    result = run([str(binary)], check=False)

    if "-rms" not in result.stdout:

        raise RuntimeError(

            'An bs1770demo executable without RMS support (cmdl option "-rms") was detected. Please update the bs1770demo executable. See bin/README.md for details.'

        )