Don't <dfn> Promise. WebIDL already does that. (w3c#1023)

Author: jyasskin

css-font-loading/Overview.bs

@@ -50,7 +50,7 @@ Introduction</h2>
 <h3 id="values">
 Values</h3>
 
-	This specification uses <dfn interface lt="Promise">Promises</dfn>,
+	This specification uses {{Promise}}s,
 	which are defined in <a href="http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts">ECMAScript 6</a>.
 	HTML5Rocks has some <a href="http://www.html5rocks.com/en/tutorials/es6/promises/">good tutorial material introducing Promises</a>.