[css-font-loading] bikeshed fixes

Author: tabatkins

css-font-loading/Overview.bs

@@ -144,7 +144,7 @@ The Constructor</h3>
 
 		<li>
 			Parse the <a argument>family</a> argument,
-			and the members of the <a argument for='FontFace()'>descriptors</a> argument,
+			and the members of the <a argument for='FontFace/FontFace()'>descriptors</a> argument,
 			according to the grammars of the corresponding descriptors of the CSS ''@font-face'' rule.
 			If any of them fail to parse correctly,
 			reject <var>font face's</var> <a>[FontStatusPromise]</a> with a SyntaxError exception and abort these steps.