Adds information about the pull request #914 on the CHANGES file

Author: Felipe Zimmerle

CHANGES

@@ -1,6 +1,8 @@
 DD mmm YYYY - X.Y.Z (To be released)
 ------------------------------------
 
+ * Added support to generate audit logs in JSON format.
+   [Issue #914, #897, #656 - Robert Paprocki]
  * Creating AuditLog serial file (or paralel index) respecting the
    permission configured with SecAuditLogFileMode, before, it was used
    only to save the transactions while in paralel mode.