Make flex-item-align compute 'auto' regardless of being a flexbox item.

--HG--
extra : rebase_source : ab43be0cbfb24cb99e1021a32523d06531597638

Author: tabatkins

css3-flexbox/Overview.src.html

@@ -1302,7 +1302,7 @@ <h3 id='flex-align'>
 
 	<p>
 		A value of <dfn id="flex-item-align-auto">''auto''</dfn> for 'flex-item-align' 
-		computes to the value of 'flex-align' on the <i>flexbox item's</i> flexbox.  
+		computes to the value of 'flex-align' on the element's parent.  
 		The alignments are defined as:
 
 	<dl>