[css-color-5][editorial] whitespace linting

Author: svgeesus

css-color-5/Overview.bs

@@ -3566,7 +3566,7 @@ No new privacy considerations have been reported on this specification.
 			system-color-hightlights-vs-getSelection-001.html
 			system-color-hightlights-vs-getSelection-002.html
 			out-of-gamut-legacy-rgb.html
-  			system-color-support.html
+			system-color-support.html
 		</wpt>
 
 		<wpt hidden title="CSS Color 6">