[css-color-5]{editorial] Update abstract

Author: svgeesus

css-color-5/Overview.bs

@@ -14,7 +14,7 @@ Editor: Chris Lilley, W3C, https://svgees.us/, w3cid 1438
 Editor: Una Kravets, Google, https://una.im, w3cid 115525
 Editor: Lea Verou, Invited Expert, http://lea.verou.me/about, w3cid 52258
 Editor: Adam Argyle, Google, https://nerdy.dev, w3cid 112669
-Abstract: This module extends CSS Color [[css-color-4]] to add color modification functions, and custom color spaces (ICC profiles).
+Abstract: This module extends CSS Color [[css-color-4]] to add color modification functions, custom color spaces (ICC profiles), and device-cmyk().
 Repository: w3c/csswg-drafts
 WPT Path Prefix: css/css-color/
 WPT Display: open