Fix accidental revision nesting resulting in dropped revision information.

Author: HansBusch

doc/Core.xml

@@ -278,6 +278,7 @@
           <personname>Venkateswara Rao, Hans Busch</personname>
         </author>
         <revremark>HTTP Digest Authentication - SHA 256 support as per RFC 7616. Clarify behavior in case no hostname has been assigned. Unify analytics and core attribute and value handling.</revremark>
+      </revision>
       <revision>
         <revnumber>23.06</revnumber>
         <date>Jun-2023</date>
@@ -286,7 +287,6 @@
         </author>
         <revremark>Extend storage configuration for object store.</revremark>
       </revision>
-      </revision>
     </revhistory>
   </info>
   <preface>