updated manage page

Author: TimLFletcher

modules/manage/pages/manage-security/manage-auditing.adoc

@@ -265,7 +265,7 @@ NOTE: When you list the users using the REST API, the local and internal usernam
 
 * Specify `rotateSize` in bytes and `rotateInterval` in seconds.
 
-* Use the `pruneAge` parameter to instruct Couchbase Server to automatically delete rotated audit logs after 10800 minutes or a week.
+* Use the `pruneAge` parameter to instruct Couchbase Server to automatically delete rotated audit logs after 10800 seconds (3 hours).
 
 [#auditing-user-activity]
 == Auditing User Activity