fix yaml syntax

infrastructure/cert-manager/cert-manager.yaml

@@ -24,12 +24,10 @@ metadata:
   namespace: cert-manager
 spec:
   interval: 30m
-  chart:
+  chartRef:
-    spec:
+    kind: OCIRepository
-      chartRef:
+    name: cert-manager
-        kind: OCIRepository
+    namespace: cert-manager
-        name: cert-manager
-        namespace: cert-manager
   values:
     crd:
       enabled: true