[css-values-5][editorial] Mention <number> in calc-*(). w3c#6245

Author: tabatkins

css-values-5/Overview.bs

@@ -859,7 +859,7 @@ Weighted Average Notations: the *-mix() family</h2>
 
 	The [=mix notations=] in CSS include:
 	* ''calc-mix()'',
-		for mixing <<length>>, <<percentage>>, <<time>>,
+		for mixing <<number>>, <<length>>, <<percentage>>, <<time>>,
 		and other dimensions representable in ''calc()'' expressions
 	* ''transform-mix()'',
 		for mixing <<transform-list>>s
@@ -1001,7 +1001,7 @@ Interpolation Mapping Notations: the *-interpolate() family</h2>
 
 	The [=interpolation notations=] in CSS include:
 	* ''calc-interpolate()'',
-		for interpolating <<length>>, <<percentage>>, <<time>>,
+		for interpolating <<number>>, <<length>>, <<percentage>>, <<time>>,
 		and other dimensions representable in ''calc()'' expressions
 	* ''transform-interpolate()'',
 		for interpolating <<transform-list>>s