Merge pull request #5348 from renatahodovan/color-4-color-fix

Add missing OR to the grammar of color definition

Author: svgeesus

css-color-4/Overview.bs

@@ -257,7 +257,7 @@ Representing Colors: the <<color>> type</h2>
 	Colors in CSS are represented by the <dfn export><<color>></dfn> type:
 
 	<pre class='prod'>
-	&lt;color> = <<hex-color>> | <<named-color>> | currentcolor | transparent
+	&lt;color> = <<hex-color>> | <<named-color>> | currentcolor | transparent |
 	    <<rgb()>> | <<rgba()>> | <<hsl()>> | <<hsla()>> | <<hwb()>> |
 	    <<lab()>> | <<lch()>> |
 	    <<color()>> | <<device-cmyk()>> |