[css-font-loading] Tweak the example to use the resolved value.

Author: tabatkins

css-font-loading/Overview.bs

@@ -704,8 +704,8 @@ Interaction with CSS Font Loading and Matching</h3>
 
 		<pre>
 		var f = new FontFace("newfont", "url(newfont.woff)", {});
-		f.load().then(function () {
-			document.fonts.add(f);
+		f.load().then(function (loadedFace) {
+			document.fonts.add(loadedFace);
 			document.body.style.fontFamily = "newfont, serif";
 		});
 		</pre>

css-font-loading/Overview.html

@@ -790,8 +790,8 @@ <h3 class="heading settled heading" data-level=3.6 id=font-face-set-css><span cl
 		authors can defer the addition of a new <a data-link-type=idl href=#dom-fontface title=fontface>FontFace</a> to a <a data-link-type=idl href=#dom-fontfaceset title=fontfaceset>FontFaceSet</a> until the load has completed:
 
 		<pre>var f = new FontFace("newfont", "url(newfont.woff)", {});
-f.load().then(function () {
-  document.fonts.add(f);
+f.load().then(function (loadedFace) {
+  document.fonts.add(loadedFace);
   document.body.style.fontFamily = "newfont, serif";
 });
 </pre>