update reno

Author: scrungus

releasenotes/notes/magnum-capi-driver-2dd8cf6e68a1919c.yaml

@@ -1,4 +1,4 @@
 ---
 features:
   - |
-    Adds the new capi driver into the magnum container
+    Adds the new magnum-capi-helm out of tree driver (see here https://github.com/stackhpc/magnum-capi-helm) into release train magnum containers