Improved mode range documentation

[radarhere]

Helps #6786

Inputting HSV (359.9, 100%, 100%) into https://www.rapidtables.com/convert/color/hsv-to-rgb.html, I get RGB (255, 0, 0).

>>> from PIL import Image
>>> im = Image.new("HSV", (1, 1), (255, 255, 255))
>>> im.convert("RGB").getpixel((0, 0))
(255, 0, 0)

I would therefore conclude that the H value ranges from 0-360, excluding 360.

[radarhere]

I've added another commit to mention the ranges of the "I" and "F" modes.