return CSSStyleSheet from LinkStyle

saschanaz · emilio · commit 3477956203a7 · 2018-11-13T20:45:14.000+01:00
diff --git a/cssom-1/Overview.bs b/cssom-1/Overview.bs
@@ -1205,7 +1205,7 @@ interface.
 
 <pre class=idl>
 interface mixin LinkStyle {
-  readonly attribute StyleSheet? sheet;
+  readonly attribute CSSStyleSheet? sheet;
 };
 </pre>
 
