Docs: clarify that Cillium installation requires a manual restart

doc/user/clusters/applications.md

@@ -837,7 +837,8 @@ management project. Refer to the
 for the available configuration options.
 
 CAUTION: **Caution:**
-Installation and removal of the Cilium [requires restart](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-gke/#restart-remaining-pods)
+Installation and removal of the Cilium requires a **manual**
+[restart](https://cilium.readthedocs.io/en/stable/gettingstarted/k8s-install-gke/#restart-remaining-pods)
 of all affected pods in all namespaces to ensure that they are
 [managed](https://cilium.readthedocs.io/en/stable/troubleshooting/#ensure-pod-is-managed-by-cilium)
 by the correct networking plugin.