Informative reference (#542)

Author: gregwfreedman

encrypted-media-respec.html

@@ -2993,7 +2993,7 @@ 
                 The HDCP Policy is represented by {{MediaKeysPolicy/minHdcpVersion}}. If the system
                 can enable the HDCP version specified or higher, then the policy will result in a
                 {{MediaKeyStatus}} of {{MediaKeyStatus/"usable"}}. The
-                [[EME-HDCP-VERSION-REGISTRY]] provides the mapping from
+                [[?EME-HDCP-VERSION-REGISTRY]] provides the mapping from
                 {{MediaKeysPolicy/minHdcpVersion}} values to HDCP specifications.
               p>
               <p class="note">