Pike release note cleanup

Various fixes in release notes noticed during Pike review.

Change-Id: Ifc92f757287c52a85ef01a01fdae3716f9a1f93b

releasenotes/notes/bug-1693084-fix-az-cache-invalid-6td4q74q28uxcd68.yaml

@@ -1,5 +1,5 @@
 ---
 fixes:
   - |
-    Now cinder will refresh the az cache immediatelly if previous create
+    Now cinder will refresh the az cache immediately if previous create
     volume task failed due to az not found.

releasenotes/notes/new-nova-config-section-2a7a51a0572e7064.yaml

@@ -8,4 +8,6 @@ deprecations:
     section are deprecated in favor of the settings in
     the [nova] section.
 fixes:
-  - Fixed using of the user's token in the nova client (bug #1686616)
+  - |
+    Fixed using of the user's token in the nova client
+    (`bug #1686616 <https://bugs.launchpad.net/cinder/+bug/1686616>`_)

releasenotes/notes/snapshot_backing_up_status_support-164fbbb2a564e137.yaml

@@ -1,6 +1,8 @@
 ---
 fixes:
-  - Fix the unreasonable status change for volumes and snapshots when creating
+  - When backing up a volume from a snapshot, the volume status would be set
-    backups from snapshots.
+    to "backing-up", preventing operations on the volume until the backup is
+    complete. This status is now set on the snapshot instead, making the
+    volume available for other operations.
 upgrade:
   - The "backing-up" status is added to snapshot's status matrix.

releasenotes/notes/support-tenants-project-in-attachment-list-3edd8g138a28s4r8.yaml

@@ -1,4 +1,4 @@
 ---
 fixes:
-  - Add ``all_tenants``, ``project_id`` support in
+  - Add ``all_tenants``, ``project_id`` support in the
-    attachment list&detail APIs.
+    attachment list and detail APIs.