syncrepl is now RFC4533

doc/guide/admin/syncrepl.sdf

@@ -66,9 +66,7 @@ The LDAP Sync protocol allows a client to maintain a synchronized
 copy of a DIT fragment. The LDAP Sync operation is defined as a set
 of controls and other protocol elements which extend the LDAP search
 operation. This section introduces the LDAP Content Sync protocol
-only briefly. For more information, refer to the Internet Draft
-{{The LDAP Content Synchronization Operation
-<draft-zeilenga-ldup-sync-05.txt>}}.
+only briefly. For more information, refer to {{REF:RFC4533}}.
 
 The LDAP Sync protocol supports both polling and listening for
 changes by defining two respective synchronization operations:

doc/guide/preamble.sdf

@@ -230,4 +230,5 @@ RFC4517|PS|Lightweight Directory Access Protocol (LDAP): Syntaxes and Matching R
 RFC4518|PS|Lightweight Directory Access Protocol (LDAP): Internationalized String Preparation|http://www.rfc-editor.org/rfc/rfc4518.txt
 RFC4519|PS|Lightweight Directory Access Protocol (LDAP): Schema for User Applications|http://www.rfc-editor.org/rfc/rfc4519.txt
 RFC4520|BCP|IANA Considerations for LDAP|http://www.rfc-editor.org/rfc/rfc4520.txt
+RFC4533|X|The Lightweight Directory Access Protocol (LDAP) Content Synchronization Operation|http://www.rfc-editor.org/rfc/rfc4533.txt
 !endblock