[css-font-loading] Update biblio ref.

Author: tabatkins

css-font-loading/Overview.bs

@@ -308,7 +308,7 @@ The <code>load()</code> method</h3>
 
 		<li>
 			Using the value of <var>font face's</var> {{[[Urls]]}} slot,
-			attempt to load a font as defined in [[!CSS3-FONTS]],
+			attempt to load a font as defined in [[!CSS-FONTS-3]],
 			as if it was the value of a ''@font-face'' rule's 'src' descriptor.
 
 		<li>
@@ -821,7 +821,7 @@ The <code>ready</code> attribute</h3>
 <h3 id='font-face-set-css'>
 Interaction with CSS Font Loading and Matching</h3>
 
-	When the font matching algorithm in [[CSS3-FONTS]] is run automatically by the user-agent,
+	When the font matching algorithm in [[CSS-FONTS-3]] is run automatically by the user-agent,
 	the set of font faces it matches over must be precisely the set of fonts in the <a>font source</a> for the document,
 	plus any local font faces.