Fixed description and param name of setPedHeadOverlayTint

[Kaev]

The current description and colorType parameter name is wrong and misleading.

ColorType is a misleading parameter name because it doesn't describe a type, only the amount of colors.
Lipstick and Blush have ColorType = 1 but are using Makeup tints.
Every other overlay with ColorType = 1 uses hair tints.
If it would describe a ColorType, this wouldn't be true.

Also the mentioned overlays with their ColorTypes are wrong. I've tested all ingame and this is the result:

Overlay ID	Guessed Overlay Name	ColorCount
0	Facial Blemish	0
1	Facial Hair	1
2	Eyebrows	1
3	Age	0
4	Makeup	2
5	Blush	1
6	Complexion	0
7	Sun Damage	0
8	Lipstick	1
9	Freckles	0
10	Chest Hair	1
11	Body Blemish	0
12	Add Body Blemishes	0

I've renamed the parameter and updated the description of setPedHeadOverlayTint so others aren't mislead anymore aswell.