Update notes for submitted changes

* app_senddtmf: Add receive mode to AMI Action PlayDTMF

77/2b59034ff25b2e943d9e32fdc42e99e7a98609

@@ -0,0 +1,9 @@
+Code-Review+1: Kevin Harwell <kharwell@digium.com>
+Code-Review+1: Benjamin Keith Ford <bford@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: Thu, 21 Nov 2019 09:18:54 -0600
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/13241
+Project: asterisk
+Branch: refs/heads/master