Fix the format error of healthCheck in test templates

Author: LuBingtan

test/infrastructure/docker/templates/clusterclass-in-memory.yaml

@@ -117,15 +117,15 @@ spec:
       apiVersion: controlplane.cluster.x-k8s.io/v1beta2
       kind: KubeadmControlPlaneTemplate
       name: in-memory-control-plane
-      healthCheck:
-        checks:
-          unhealthyNodeConditions:
-            - type: Ready
-              status: Unknown
-              timeoutSeconds: 300
-            - type: Ready
-              status: "False"
-              timeoutSeconds: 300
+    healthCheck:
+      checks:
+        unhealthyNodeConditions:
+          - type: Ready
+            status: Unknown
+            timeoutSeconds: 300
+          - type: Ready
+            status: "False"
+            timeoutSeconds: 300
   infrastructure:
     templateRef:
       apiVersion: infrastructure.cluster.x-k8s.io/v1beta2