add obsolete to [[!RFC4122]] to surpress link error

index.bs

@@ -4487,7 +4487,7 @@ Response</a></code>, the UA MUST perform the following steps:
   typedef DOMString UUID;
 </xmp>
 
-A <a>UUID</a> string represents a 128-bit [[!RFC4122]] UUID. A <dfn>valid
+A <a>UUID</a> string represents a 128-bit [[!RFC4122 obsolete]] UUID. A <dfn>valid
 UUID</dfn> is a string that matches the [[!ECMAScript]] regexp
 <code>/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/</code>.
 That is, a <a>valid UUID</a> is lower-case and does not use the 16- or 32-bit