DataFrame.equals incorrect `See Also` section of docstring for assert_*_equal

[simonjayhawkins]

xref #22539

assert_series_equal and assert_frame_equal do not return True or False.

        See Also
        --------
        Series.eq : Compare two Series objects of the same length
            and return a Series where each element is True if the element
            in each Series is equal, False otherwise.
        DataFrame.eq : Compare two DataFrame objects of the same shape and
            return a DataFrame where each element is True if the respective
            element in each DataFrame is equal, False otherwise.
        assert_series_equal : Return True if left and right Series are equal,
            False otherwise.
        assert_frame_equal : Return True if left and right DataFrames are
            equal, False otherwise.
        numpy.array_equal : Return True if two arrays have the same shape
            and elements, False otherwise.

also the entries in See Also for assert_series_equal and assert_frame_equal don't link to anything.

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.equals.html#pandas-dataframe-equals