[css-display] Prep for WD

Author: fantasai

css-display/Overview.bs

@@ -1,7 +1,7 @@
 <h1>CSS Display Module Level 3</h1>
 
 <pre class='metadata'>
-Status: ED
+Status: WD
 Work Status: Revising
 ED: https://drafts.csswg.org/css-display/
 Shortname: css-display
@@ -21,6 +21,7 @@ At Risk: All two-keyword values of 'display' and ''display: inline-list-item''
 </pre>
 <pre class="link-defaults">
 spec:css-break-3; type:dfn; text:fragment;
+spec:css22; type:property; text:overflow;
 </pre>
 
 <h2 id="intro">