Update notes for submitted changes

* res_pjsip_dtmf_info: Hook flash

99/573f9540577b05c9c28d62eed24886d3903755

@@ -0,0 +1,9 @@
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+1: Kevin Harwell <kharwell@digium.com>
+Code-Review+2: George Joseph <gjoseph@digium.com>
+Verified+2: George Joseph <gjoseph@digium.com>
+Submitted-by: George Joseph <gjoseph@digium.com>
+Submitted-at: Tue, 08 Jun 2021 15:46:08 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/16009
+Project: asterisk
+Branch: refs/heads/18