def remove_collapsible_headings(read):
    """
    Removes collapsible headings from markdown read from file
    :param read: raw markdown read from file
    :return: markdown without tags for collapsible headings
    """
    read = read.replace('<details>', '')
    read = read.replace('</details>', '')
    read = read.replace('<summary>', '')
    read = read.replace('</summary>', '')
    return read