Update table.py

[BBC-Esq]

    Parameters
    ----------
    footnote : {"none", "last_single_cell"}, optional
        If "last_single_cell" and the table’s final row has exactly one
        non-empty cell, that row is treated as a foot-note.

    Returns
    -------
    list  |  (list, str | None)

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[BBC-Esq]

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