add changlog entry for the formbroker documentation update
diff --git a/ChangeLog b/ChangeLog
index dcc8c7f..e7abfe5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2023-09-12 Massimo Manghi <mxmanghi@apache.org>
+ * rivet/packages/formbroker/formbroker.tcl: expanded comments
+ * doc/xml/formbroker.xml: documenting variable type validators error codes
+
2023-06-14 Massimo Manghi <mxmanghi@apache.org>
* tests/channel.test: indenting code for improved readability
* src/mod_rivet_ng/mod_rivet.c,mod_rivet_generator.c: Removed unused code that
