Resolves fdo#71781: CMIS: Default Alfresco 4 URL not working

See https://bugs.freedesktop.org/show_bug.cgi?id=71781#c5
Badfully Alfresco server test doesn't follow this (their own?) rule since the url is:
http://cmis.alfresco.com/cmisatom
and not http://cmis.alfresco.com/alfresco/cmisatom

Change-Id: I3712993db96f8544381065c71a36697207ce66e0
Reviewed-on: https://gerrit.libreoffice.org/12071Reviewed-by: Bosdonnat Cedric <cedric.bosdonnat@free.fr>
Tested-by: Bosdonnat Cedric <cedric.bosdonnat@free.fr>

officecfg/registry/data/org/openoffice/Office/Common.xcu

@@ -575,7 +575,7 @@
     </prop>
     <prop oor:name="CmisServersUrls">
       <value>
-        <it>http://&lt;host&gt;/alfresco/cmisws/RepositoryService?wsdl</it>
+        <it>http://&lt;host:port&gt;/alfresco/cmisatom</it>
         <it>https://api.alfresco.com/cmis/versions/1.0/atom/</it>
         <it>http://&lt;host&gt;/p8cmis/wsdl</it>
         <it>https://apps.lotuslive.com/files/basic/cmis/my/servicedoc</it>