def normalize_br_tags(s):
    """
    I like 'em this way.

    >>> normalize_br_tags('Hi there')
    'Hi there'

    >>> normalize_br_tags('Hi <br>there')
    'Hi <br />there'

    >>> normalize_br_tags('Hi there<br/>')
    'Hi there<br />'

    """
    return s.replace("<br>", "<br />").replace("<br/>", "<br />")