[doc] correct formatting in release notes

Two notes were indented incorrectly, causing them to be rendered
as a description list instead of a bullet point.  Also updated
the text to reflect the cinder release note standard format [0].

[0] https://docs.openstack.org/cinder/latest/contributor/releasenotes.html#drivers

Change-Id: If3cf97ad20d231e375bde949e07545dd08355e29
Signed-off-by: Brian Rosmaita <rosmaita.fossdev@gmail.com>

releasenotes/notes/bug-2119123-fixed-multiple-issues-with-active-sync-replication-da3bb479bc424224.yaml

@@ -6,5 +6,5 @@ fixes:
     added to the driver to ensure ONTAP version checks and initialization
     of SnapMirror as part of creation of SMAS relationship.
   - |
-    `Bug #2119123 <https://bugs.launchpad.net/cinder/+bug/2119123>`_:
-     Fix for NetApp Cinder Driver - Active Sync issues
+    NetApp driver `bug #2119123 <https://bugs.launchpad.net/cinder/+bug/2119123>`_:
+    Fix for NetApp Cinder Driver - Active Sync issues

releasenotes/notes/bug-2138640-fix-for-async-snapmirror-regression-1d1250e1a1a545ef.yaml

@@ -1,7 +1,7 @@
 ---
 fixes:
   - |
-    `Bug #2138640 <https://bugs.launchpad.net/cinder/+bug/2138640>`_:
-      Fixed the issue where replication using the default MirrorAllSnapshot
-      policy is failing for Cinder Volumes. This issue was introduced due to
-      a regression while adding support for AutomatedFailover policy.
+    NetApp driver `bug #2138640 <https://bugs.launchpad.net/cinder/+bug/2138640>`_:
+    Fixed the issue where replication using the default MirrorAllSnapshot
+    policy is failing for Cinder Volumes. This issue was introduced due to
+    a regression while adding support for AutomatedFailover policy.