[css-color-5] move hue-adjuster back to color-mix, helps w3c#6140

Author: svgeesus

css-color-5/Overview.bs

@@ -125,7 +125,9 @@ Mixing colors: the ''color-mix()'' function {#color-mix}
 
 
 <pre class='prod'>
-	<dfn>color-mix()</dfn> = color-mix( in <<color-space>> , [ <<color>> && <<percentage [0,100]>>? ]#{2})
+	<dfn>color-mix()</dfn> = color-mix( in <<color-space>> , [ <<color>> && <<percentage [0,100]>>? ]#{2} <<hue-adjuster>>?)
+	<dfn>&lt;hue-adjuster></dfn> = shorter | longer | increasing | decreasing | specified
+
 </pre>
 
 	Percentages are required to be in the range 0% to 100%. Negative percentages are specifically disallowed. The percentages are normalized as follows:
@@ -712,12 +714,11 @@ Adjusting colors: the ''color-adjust'' function {#coloradjust}
 				| <<xyz-adjuster>> | <<lab-adjuster>> | <<lch-adjuster>>
 			] | alpha ] <<percentage>>?
 		<dfn>&lt;srgb-adjuster></dfn> = red | green | blue
-		<dfn>&lt;hsl-adjuster></dfn> = <<hue-adjuster>> | saturation | lightness
-		<dfn>&lt;hwb-adjuster></dfn> = <<hue-adjuster>> |  whiteness | blackness
+		<dfn>&lt;hsl-adjuster></dfn> = hue | saturation | lightness
+		<dfn>&lt;hwb-adjuster></dfn> = hue |  whiteness | blackness
 		<dfn>&lt;xyz-adjuster></dfn> = x | y | z
 		<dfn>&lt;lab-adjuster></dfn> = lightness | a | b
-		<dfn>&lt;lch-adjuster></dfn> = lightness | chroma | <<hue-adjuster>>
-		<dfn>&lt;hue-adjuster></dfn> = hue [shorter | longer | increasing | decreasing | specified ]?
+		<dfn>&lt;lch-adjuster></dfn> = lightness | chroma | hue
 	</pre>
 
 	The meaning of the adjusters is defined by color space.