[css-round-display-1] Add a link to the last public WD

Author: jihyerish

css-round-display/Overview.bs

@@ -1,17 +1,18 @@
 <h1>CSS Round Display Level 1</h1>
 <pre class='metadata'>
 Level: 1
-Status: ED
+Status: WD
 Work Status: Exploring
 ED: https://drafts.csswg.org/css-round-display/
 Shortname: css-round-display
 TR: https://www.w3.org/TR/css-round-display-1/
 Group: csswg
+Previous Version: https://www.w3.org/TR/2016/WD-css-round-display-1-20161222/
 Previous Version: https://www.w3.org/TR/2016/WD-css-round-display-1-20160301/
 Previous Version: https://www.w3.org/TR/2015/WD-css-round-display-1-20150922/
 Editor: Hyojin Song, LG Electronics, hyojin22.song@lge.com
 Editor: Jihye Hong, LG Electronics, jh.hong@lge.com
-Former Editor: Soonbo Han, LG Electronics, soonbo.han@lge.com
+Editor: Soonbo Han (until June 2015), LG Electronics, soonbo.han@lge.com
 Link Defaults: css-shapes-1 (type) <basic-shape>
 Link Defaults: css-transforms-1 (property) transform
 Link Defaults: css-transforms-1 (property) transform-origin