Updated ImageCms.createProfile colorTemp default and docstring

[radarhere]

colorTemp is hinted as a float,

Pillow/src/PIL/ImageCms.py

Lines 756 to 758 in 4f4b0bc

	def createProfile(
	colorSpace: Literal["LAB", "XYZ", "sRGB"], colorTemp: SupportsFloat = -1
	) -> core.CmsProfile:

but described in the docstring as an integer.

Pillow/src/PIL/ImageCms.py

Line 780 in 4f4b0bc

:param colorTemp: Positive integer for the white point for the profile, in

I've updated the docstring to say 'float' instead.

I've also changed the default from -1 to 0. This has no effect, it just seems simpler to me. It also matches the default in the C layer.