[css-overflow-3] Bikeshed linking error. Really need to define the box model somewhere.

Author: fantasai

css-overflow-3/Overview.bs

@@ -15,6 +15,7 @@ Abstract: This module contains the features of CSS relating to scrollable overfl
 !Change Log: <a href="https://hg.csswg.org/drafts/log/tip/css-overflow/Overview.src.html">from 28 March 2013 to 27 January 2015</a>
 !Change Log: <a href="https://hg.csswg.org/drafts/log/tip/css3-overflow/Overview.src.html">from 31 July 2012 to 27 March 2013</a>
 Ignored Vars: B, P
+Ignored Terms: padding edge
 </pre>
 <!-- FIXME: Regressions from bikeshed conversion: -->
 <!-- - Value lines in propdef tables no longer link to #values. -->