add submgr intersphinx and docs

Signed-off-by: weichen <niweichen@chinamobile.com>
Change-Id: If8ea779c2c49869fd5d5c3746bf7b3ac9597df4a
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index d5e699d..8794388 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -103,6 +103,8 @@
 
 * :doc:`Shared Data Layer (SDL) in Go Release-notes <ric-plt-sdlgo:release-notes>`
 
+..
+.. * :doc:`Subscription Manager Release-notes <ric-plt-submgr:release-notes>`
 
 Jaegeradapter, which contains jaeger configuration files. This first version only supports configuration for a jaeger-all-in-one deployment.