[css-overflow-3] Bikeshed fixes

Author: frivoal

css-overflow-3/Overview.bs

@@ -18,7 +18,7 @@ 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, viewport, line box, flex order
+Ignored Terms: padding edge, viewport, line box, flex order, -webkit-box-orient
 At Risk: the 'max-lines' property
 Status Text: <strong>This update trims away most of the experimental new ideas
    for handling overflow that were described in the <a href="https://www.w3.org/TR/2013/WD-css-overflow-3-20130418/">previous Working Draft</a>.
@@ -1151,7 +1151,7 @@ Once it is sufficiently stable in this specification,
 
 	</dl>
 
-	Note: This property does **not** cause the box to [[establish an independent formatting context=].
+	Note: This property does <em>not</em> cause the box to [=establish an independent formatting context=].
 
 	<div class=example>
 		Given an article with one excessively long overflowing line,