Fix review findings

Author: sbueringer

test/e2e/data/infrastructure-docker/main/cluster-template-topology-runtimesdk-v1beta1/cluster-runtimesdk.yaml

@@ -1,3 +1,4 @@
+# Note: This file is intentionally using v1beta1 for v1beta1 test coverage.
 apiVersion: cluster.x-k8s.io/v1beta1
 kind: Cluster
 metadata:

test/e2e/data/infrastructure-docker/main/clusterclass-quick-start-runtimesdk-v1beta1.yaml

@@ -1,3 +1,4 @@
+# Note: This file is intentionally using v1beta1 for v1beta1 test coverage.
 apiVersion: cluster.x-k8s.io/v1beta1
 kind: ClusterClass
 metadata:

test/extension/handlers/topologymutation/handler.go

@@ -263,7 +263,7 @@ func patchKubeadmConfigTemplate(_ context.Context, obj runtime.Object, _ map[str
 		}
 		obj.Spec.Template.Spec.JoinConfiguration.NodeRegistration.KubeletExtraArgs["v"] = "2"
 	case *bootstrapv1.KubeadmConfigTemplate:
-		obj.Spec.Template.Spec.JoinConfiguration.NodeRegistration.KubeletExtraArgs = append(obj.Spec.Template.Spec.InitConfiguration.NodeRegistration.KubeletExtraArgs, bootstrapv1.Arg{Name: "v", Value: ptr.To("2")})
+		obj.Spec.Template.Spec.JoinConfiguration.NodeRegistration.KubeletExtraArgs = append(obj.Spec.Template.Spec.JoinConfiguration.NodeRegistration.KubeletExtraArgs, bootstrapv1.Arg{Name: "v", Value: ptr.To("2")})
 	}
 }