[css-content] Revert from WD prep, fix link.

Author: fantasai

css-content/Overview.bs

@@ -1,14 +1,13 @@
 <h1>CSS Generated Content Module Level 3</h1>
 <pre class='metadata'>
-Status: WD
-Date: 2016-06-02
+Status: ED
 Work Status: Exploring
 Shortname: css-content
 Level: 3
 Group: csswg
 TR: https://www.w3.org/TR/css3-content/
 ED: https://drafts.csswg.org/css-content/
-Previous Version: https://www.w3.org/TR/2003/WD-css3-content-20030514/
+Previous Version: https://www.w3.org/TR/2016/WD-css-content-3-20160602/
 Editor: Elika J. Etemad / fantasai, W3C Invited Expert, http://fantasai.inkedblade.net/contact
 Editor: Dave Cramer, Hachette Livre, dauwhe@gmail.com
 Former Editor: Håkon Wium Lie, Opera Software, howcome@opera.com
@@ -239,11 +238,10 @@ URI</h3>
 
 
 
-<h3 id="contents">
-contents</h3>
+<h3 id="element-content">
+Element Content</h3>
 
 <dl dfn-for="content, <content-list>" dfn-type=value>
-
 		<dt><dfn>contents</dfn>
 		<dd>The element's descendents. Since this can only be used once per element (you can't duplicate the children if, e.g., one is a plugin or form control), it is handled as follows: