[css-writing-modes-4] Update ref from HTML5 to HTML

Port 6fa466e from L3 to L4

Author: frivoal

css-writing-modes-4/Overview.bs

@@ -208,7 +208,7 @@ Inline Direction and Bidirectionality</h2>
     to its corresponding CSS styles.
 
   <p class="note">
-    The HTML specifications ([[HTML401]], section 8.2, and [[HTML5]], section 10.3.5) define
+    The HTML specifications ([[HTML401]], section 8.2, and [[HTML]] [[HTML#bidi-rendering|section 14.3.5]]) define
     bidirectionality behavior for HTML elements.</p>
 
   <p class="advisement">