Update release notes

Cleans up the release notes for the next release:
- removes the prelude since it was incorrectly added; no release note
  was needed for the change to help strings
- combines two features related to event handling, into one feature
- adds the API version to the is-smartnic argument
- some grammatical fixes

Change-Id: Idd929e419e036de8fbafc22f06ff6c129fc23b16

releasenotes/notes/accept-valid_interfaces-3b8f5e3e362e04cd.yaml

@@ -8,4 +8,4 @@ features:
     ``interface``. However, we still accept ``interface``, as the consumer may
     be deriving kwargs from a non-conf source (such as an already-created ksa
     Adapter where ``valid_interfaces`` has already been translated to
-    ``interfaces``.
+    ``interfaces``).

releasenotes/notes/add-events-support-53c461d28abf010b.yaml

@@ -1,12 +1,8 @@
 ---
 features:
   - |
-    Added ``Event`` resource , used to notify Ironic of external events.
-
-    .. Note:: Events are not intended for end-user usage. (Internal use only.)
-  - |
-    Added the ``client.events.create`` Python SDK method to support publishing
-    events to Ironic using the /v1/events API endpoint.
-    (available starting with API version 1.54).
+    Adds the ``Event`` resource and the ``client.events.create`` Python SDK
+    method to support publishing events to the Bare Metal service using
+    the /v1/events API endpoint (introduced in API version 1.54).
 
     .. Note:: Events are not intended for end-user usage. (Internal use only.)

releasenotes/notes/add-hostname-to-port-local-link-connection-0d4ae64b0c24bf52.yaml

@@ -1,5 +0,0 @@
----
-prelude: >
-    Support Smart NIC ports. Adding local link connection attributes
-    ``port_id`` and ``hostname`` when creating port with port argument
-    ``--is-smartnic`` means that it's a Smart NIC port.

releasenotes/notes/add-is-smartnic-port-attr-ed46d887aec276ed.yaml

@@ -1,5 +1,11 @@
 ---
 features:
   - |
-    Adds support for creating Smart NIC ports by adding is-smartnic port
-    attribute to port command.
+    Adds support for Smart NIC ports by adding the ``--is-smartnic``
+    argument to the following CLI commands:
+
+    * ``openstack baremetal port create``
+    * ``openstack baremetal port set``
+    * ``openstack baremetal port unset``
+
+    This was introduced in API version 1.53.

releasenotes/notes/configdrive-7bd2b67830691b2e.yaml

@@ -5,5 +5,5 @@ features:
     drive on the server side (requires API version 1.56) to the following
     commands:
 
-        openstack baremetal node deploy <node> --config-drive '{...}'
-        openstack baremetal node rebuild <node> --config-drive '{...}'
+    * ``openstack baremetal node deploy <node> --config-drive '{...}'``
+    * ``openstack baremetal node rebuild <node> --config-drive '{...}'``