Trivial Fix

Improperly rendered Release Note for v3.9.0

Change-Id: Ia9b920b5a3774dd9c720fe7a39fd41aaf7be209f

Author: ankur-odl

releasenotes/notes/add-no-property-f97e4b2f390cec06.yaml

@@ -3,4 +3,4 @@ features:
   - |
     Add support to clear/overwrite all flavor properties using
     ``--no-property`` option with ``flavor set`` command.
-    [ Blueprint  `allow-overwrite-set-options <https://blueprints.launchpad.net/python-openstackclient/+spec/allow-overwrite-set-options>` _]
+    [Blueprint  :oscbp:`allow-overwrite-set-options`]