[css-color-4] Correct hue fixup, fix w3c#8838

Author: svgeesus

css-color-4/Overview.bs

@@ -4845,16 +4845,14 @@ Hue Interpolation</h3>
 	Specifying a hue interpolation strategy is already part of the <<color-interpolation-method>> syntax
 	via the <<hue-interpolation-method>> token.
 
-	Both angles and their difference need to be constrained to [0, 360] prior to interpolation.
+	Both angles and their difference need to be constrained to [0, 360) prior to interpolation.
 	To do this, the minimum number of turns that fit in the lesser angle
 	is added or subtracted from both angles,
 	bringing the lesser angle into the range [0,360);
-	and if the difference between them is greater than 360&deg;
-	then the minimum number of turns to bring the difference into the range [0,360]
+	and if the difference between them is greater than or equal to 360&deg;
+	then the minimum number of turns to bring the difference into the range [0,360)
 	is further subtracted from the greater angle.
 
-	Note: Differences of 360&deg; are allowed to maintain the originally specified direction of a full turn.
-
 	Unless otherwise specified, if no specific hue interpolation algorithm is selected by the host syntax, the default is ''shorter''.
 
 	<wpt>