Update 2.14.5 release notes

Change-Id: I69fb034ab845c95bb91bb24d9d552c95b59ffd8e
diff --git a/releases/2.14.md b/releases/2.14.md
index 7f222ec..9144703 100644
--- a/releases/2.14.md
+++ b/releases/2.14.md
@@ -406,6 +406,9 @@
 
   The missing registration was causing listeners to fail with 'Unknown event type'.
 
+* Allow to add reviewers to changes by commit sha1 using the `set-reviewers`
+  ssh command.
+
 * Hooks plugin: Protect against null object IDs in ref updates.
 
 * Polygerrit UI