[css-color-5] fix mention of powerless components

Author: romainmenke

css-color-5/Overview.bs

@@ -413,8 +413,8 @@ The choice of mixing color space can have a large effect on the end result.
 	The calcuation is as follows:
 	* <span class="swatch" style="--color: white"></span> white
 		is rgb(100% 100% 100%)
-		which is lch(100% 0 none)
-		which is oklch(100% 0 none)
+		which is lch(100% none none)
+		which is oklch(100% none none)
 	* <span class="swatch" style="--color: blue"></span> blue
 		is rgb(0% 0% 100%)
 		which is lch(29.5683% 131.201 301.364)