cluster: fix nuke's personal storage

Change-Id: I422a6d9f7a483e7c44cc8dfd8c0d8a98d9e17e46
diff --git a/cluster/kube/cluster.jsonnet b/cluster/kube/cluster.jsonnet
index f781d1f..71537d6 100644
--- a/cluster/kube/cluster.jsonnet
+++ b/cluster/kube/cluster.jsonnet
@@ -494,7 +494,7 @@
         },
 
         # nuke@hackerspace.pl's personal storage.
-        nukePersonalWaw3: kube.CephObjectStoreuser("nuke-personal") {
+        nukePersonalWaw3: kube.CephObjectStoreUser("nuke-personal") {
             metadata+: {
                 namespace: "ceph-waw3",
             },