[css-writing-modes] Update Changes section

Author: kojiishi

css-writing-modes/Overview.bs

@@ -2613,7 +2613,7 @@ Full-width Characters</h5>
       Removed statements about ''run-in'' boxes, since this value was removed from CSS2.1 and has a substantially different model in CSS Display Level 3.
       Replaced with a generalized statement about all display types, using new [[!CSS-DISPLAY-3]] terminology.
     <li>
-      Changed to propagate the computed values of the 'writing-mode' and the 'direction' property
+      Changed to <a href="#propagate-to-icb">propagate the computed values</a> of the 'writing-mode' and the 'direction' property
       from body child element to the root element.
     <li>
       Changed the 'caption-side' property to <a href="#logical-direction-layout">flow-relative mappings</a>.