(DOCSP-8027): Add links to release notes

Author: melissamahoney-mongodb

source/release-notes.txt

@@ -23,7 +23,7 @@ MongoDB Resource Changes
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
 - Adds split horizon DNS support for MongoDB replica sets, which allows
-  clients to connect to a replica set from outside of the Kubernetes
+  clients to connect to a replica set from outside of the |k8s|
   cluster.
 - Supports requests for |k8s-op-short|-generated certificates for
   additional certificate domains, which makes them valid for the
@@ -32,20 +32,20 @@ MongoDB Resource Changes
 |onprem| Resource Changes (Beta Release)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-- Promotes the ``MongoDBOpsManager`` resource to Beta. |onprem| version
-  4.2.4 is available.
+- Promotes the ``MongoDBOpsManager`` :ref:`resource
+  <k8s-om-specification>` to Beta. |onprem| version
+  4.2.4 is available.  
 - Supports Backup and restore in |k8s-op-short|-deployed |onprem|
   instances. This is a semi-automated process that deploys everything
   you need to enable backups in |onprem|. You can enable Backup by
-  setting the ``spec.backup.enabled`` setting in the |onprem| custom
-  resource. You can configure the Head Database, Oplog Store, and S3
-  Snapshot Store by using the ``MongoDBOpsManager`` resource
-  specification. 
+  setting the :opsmgrkube:`spec.backup.enabled` setting in the |onprem|
+  custom resource. You can configure the Head Database, Oplog Store, and
+  S3 Snapshot Store by using the ``MongoDBOpsManager`` :ref:`resource
+  specification <k8s-om-specification>`. 
 - Supports access to |onprem| from outside the |k8s|
-  cluster through the ``spec.externalConnectivity`` setting. 
-- Enables ``SCRAM-SHA-1`` authentication on |onprem|\'s
-  :opsmgr:`Application Database
-  </core/system-overview/#application-database>` by default. 
+  cluster through the :opsmgrkube:`spec.externalConnectivity` setting. 
+- :ref:`Enables SCRAM-SHA-1 authentication <app-db-auth>` on |onprem|\'s
+  Application Database by default. 
 - Adds support for OpenShift (Red Hat UBI Images).
 
 For more information on how to enable new features, see the sample YAML