Add new group REST APIs in 2.14 release notes

Change-Id: Ic4c212adc1f27487bec7902c4c9be531898add6d

releases/2.14.md

diff --git a/releases/2.14.md b/releases/2.14.md
index c24770d..53c3c52 100644
--- a/releases/2.14.md
+++ b/releases/2.14.md
@@ -133,6 +133,11 @@
 * [List Revision Votes](http://gerrit-documentation.storage.googleapis.com/Documentation/2.14/rest-api-changes.html#list-revision-votes)
 * [Delete Revision Vote](http://gerrit-documentation.storage.googleapis.com/Documentation/2.14/rest-api-changes.html#delete-revision-vote)
 
+#### Groups
+
+* [Query Groups](http://gerrit-documentation.storage.googleapis.com/Documentation/2.14/rest-api-groups.html#query-groups)
+* [Index Group](http://gerrit-documentation.storage.googleapis.com/Documentation/2.14/rest-api-groups.html#index-group)
+
 #### Projects
 
 * [Delete Tag](http://gerrit-documentation.storage.googleapis.com/Documentation/2.14/rest-api-projects.html#delete-tag)