Update monitoring/configs/dashboards/cluster.json

Co-authored-by: solidDoWant <fred.heinecke@yahoo.com>
Signed-off-by: Matheus Pimenta <matheuscscp@gmail.com>

Author: matheuscscp

monitoring/configs/dashboards/cluster.json

@@ -1291,7 +1291,7 @@
         "name": "operator_namespace",
         "options": [],
         "query": {
-          "query": "label_values(gotk_resource_info, exported_namespace)",
+          "query": "label_values(gotk_reconcile_duration_seconds_sum, namespace)",
           "refId": "StandardVariableQuery"
         },
         "refresh": 2,