Update 9.2.md

Author: msaju

docs/release-notes/9.2.md

@@ -1,5 +1,7 @@
 # Release notes for Gluster 9.2
 
+**Release date:** 17-May-2021
+
 This is a bugfix and improvement release. The release notes for [9.0](9.0.md), [9.1](9.1.md) contain a listing of all the new features that were added and bugs fixed in the GlusterFS 9 stable release.
 
 **NOTE:**