[css-fonts-4] linkfix

Author: svgeesus

css-fonts-4/Overview.bs

@@ -6231,7 +6231,7 @@ values contained with a <code title="&#64;ornaments">@ornaments</code>
 <i title="feature_value_block">feature value block</i> and so forth.
 
 The <code>CSSFontFeatureValuesMap</code> interface uses the
-<a href="https://dev.w3.org/2006/webapi/WebIDL/#es-map-members">default map class methods</a>
+<a href="https://heycam.github.io/webidl/#es-maplike">default map class methods</a>
 but the <code>set</code> method has different behavior.  It takes a sequence of unsigned integers and
 associates it with a given <code>featureValueName</code>. The method
 behaves the same as the default map class method