fixup! docs: package level comment

Author: dkoshkin

pkg/handlers/generic/lifecycle/registrymirror/doc.go

@@ -1,4 +1,6 @@
 // Copyright 2025 Nutanix. All rights reserved.
 // SPDX-License-Identifier: Apache-2.0
 
+// Package registrymirror provides a handler for managing a registry addon in clusters.
+// The clusters will also be configured to use the registry as a Containerd mirror (done in a different handler).
 package registrymirror