[css-2023] Add editor

Author: svgeesus

css-2023/Overview.bs

@@ -11,6 +11,7 @@ TR: https://www.w3.org/TR/css-2023/
 Editor: Tab Atkins Jr., Google, http://xanthir.com/, w3cid 42199
 Editor: Elika J. Etemad / fantasai, Invited Expert, http://fantasai.inkedblade.net/contact, w3cid 35400
 Editor: Florian Rivoal, Invited Expert, https://florian.rivoal.net, w3cid 43241
+Editor: Chris Lilley, W3C, https://svgees.us/, w3cid 1438
 Abstract: This document collects together into one definition all the specs that
 	together form the current state of Cascading Style Sheets (CSS) as of 2023.
 	The primary audience is CSS implementers, not CSS authors, as this definition