Update iprop_master_ulogsize documentation

When we removed the maximum number of ulog entries (#7368), we did not
update the documentation for that parameter in kdc.conf.  Reported by
Richard Basch.

(cherry picked from commit 5fa7e66)

ticket: 8087 (new)
version_fixed: 1.11.6
status: resolved

doc/admin/conf_files/kdc_conf.rst

@@ -201,8 +201,8 @@ The following tags may be specified in a [realms] subsection:
 
 **iprop_master_ulogsize**
     (Integer.)  Specifies the maximum number of log entries to be
-    retained for incremental propagation.  The maximum value is 2500;
-    the default value is 1000.
+    retained for incremental propagation.  The default value is 1000.
+    Prior to release 1.11, the maximum value was 2500.
 
 **iprop_slave_poll**
     (Delta time string.)  Specifies how often the slave KDC polls for