Improve `&` linting

[giovannidisiena]

Currently, the linter replaces & with literal and; however, there are some cases where it may be preferable to continue using the symbol (e.g. && within an inline code block).

We should investigate whether the ampersand can be escaped within the logic below without affecting the LaTeX generation.

def replace_ampersand_in_findings_headings(line):
    # If the line is a finding markdown heading and contains '&', replace '&' with 'and'
    if line.strip().startswith('###') and '&' in line:
        line = line.replace('&', 'and')

    return line