changelog: Add missing title

Author: TeddyAndrieux

CHANGELOG.md

@@ -7,6 +7,8 @@
 - Remove `nodes-darwin` MacOS related grafana dashboard
   (PR[4178](https://github.com/scality/metalk8s/pull/4178))
 
+### Enhancements
+
 - Bump Kubernetes version to
   [1.25.16](https://github.com/kubernetes/kubernetes/releases/tag/v1.25.16)
   (PR[#4379](https://github.com/scality/metalk8s/pull/4379))