update guilin release notes

Issue-ID: DMAAP-1488
Change-Id: I77883440ad9b8ca74d4ad0ef81bbe5c23277f4d9
Signed-off-by: sunil.unnava <sunil.unnava@att.com>
diff --git a/docs/release-notes/release-notes.rst b/docs/release-notes/release-notes.rst
index e1c4ee2..9222bd0 100644
--- a/docs/release-notes/release-notes.rst
+++ b/docs/release-notes/release-notes.rst
@@ -111,7 +111,7 @@
 ..      ===========================
 
 Release Notes
-=============
+-------------
 
 Abstract
 --------