clarifies health regeneration in comments

[CreepGit]

Had to scour through the code to figure out why increasing healthRegenModifier did nothing on high nutrition food. Assumed that it was broken. Rather than modifying the values which seem pretty good (max 1 heart regenerated every second per food item) i ended up clarifying the comments a little.

Hope the comments help the next person with similar problem

[CreepGit]

Unrelated but comment states this.

	       - saturationModifier: Affects Food Duration & Player Speed

I dont think there's a modification to player speed other than the base which activates at 20 health, so probably should remove that note. Didnt look very hard though so might be wrong