actually fix nested values for prometheus-operator (#486)

Author: tjanson

values/wire-server-metrics/demo-values.example.yaml

@@ -4,10 +4,11 @@
 #   grafana:
 #     persistence:
 #       enabled: false
-# prometheusSpec:
-#   storageSpec: null
-# alertmanager:
-#   alertmanagerSpec:
+#   prometheus:
+#     prometheusSpec:
+#       storageSpec: null
+#   alertmanager:
+#     alertmanagerSpec:
 #       storage: null
 
 
@@ -17,14 +18,15 @@
 #   grafana:
 #     persistence:
 #       storageClassName: "<my-storage-class>"
-# prometheusSpec:
-#   storageSpec: 
-#     volumeClaimTemplate:
-#       spec:
-#         storageClassName: "<my-storage-class>"
-# alertmanager:
-#   alertmanagerSpec:
-#     storage:
-#       volumeClaimTemplate:
-#         spec:
-#           storageClassName: "<my-storage-class>"
+#   prometheus:
+#     prometheusSpec:
+#       storageSpec: 
+#         volumeClaimTemplate:
+#           spec:
+#             storageClassName: "<my-storage-class>"
+#   alertmanager:
+#     alertmanagerSpec:
+#       storage:
+#         volumeClaimTemplate:
+#           spec:
+#             storageClassName: "<my-storage-class>"