Style for docstring

[Ethan Furman]

On 4/22/22 12:36, Michael F. Stemper wrote:

>    Tells caller whether or not a permutation is even.
> 
>    Determines if a permutation is even. (Alternative is that it's odd.)
> 
>    Returns True if permutation is even, False if it is odd.

Third option.

--
~Ethan~