[css-color-3] less->fewer, fixes w3c#5073

Author: fantasai

css-color-4/Overview.bs

@@ -2202,7 +2202,7 @@ Profiled, Device-dependent Colors</h2>
 				If more <<number>>s or <<percentage>>s are provided than parameters that the colorspace takes,
 				the excess <<number>>s at the end are ignored.
 
-				If less <<number>>s or <<percentage>>s are provided than parameters that the colorspace takes,
+				If fewer <<number>>s or <<percentage>>s are provided than parameters that the colorspace takes,
 				the missing parameters default to ''0''.
 				(This is particularly convenient for multichannel printers
 				where the additional inks are spot colors or varnishes