Update troubleshooting.md

Signed-off-by: gazandi <gazandi@ruangguru.com>

docs/features/kubernetes/troubleshooting.md

@@ -71,10 +71,6 @@ The Kubernetes tab will not show anything when the catalog info annotation does
 not match the related Kubernetes resource. We recommend you add the following
 labels to your resources and use the label selector annotation as follows:
 
-`backstage: <selector>` and `backstage.io/kubernetes-id: <entity-service-name>`.
-
-`backstage: <selector>` for matching with catalog-info.yaml
-
 `backstage.io/kubernetes-id: <entity-service-name>`for get k8s service-related
 objects.
 [See the plugin code](https://github.com/backstage/backstage/blob/a1f587c/plugins/kubernetes-backend/src/service/KubernetesFetcher.ts#L119)
@@ -85,7 +81,7 @@ metadata:
   creationTimestamp: '2022-03-13T13:52:46.000Z'
   labels:
     app: <k8s-app-name>
-    backstage: <selector>
+    env: <environment>
     backstage.io/kubernetes-id: <service-entity-name>
   name: <k8s-app-name>
   namespace: <namespace>
@@ -99,5 +95,5 @@ and the catalog info annotations would use label selector:
 ```yaml
 # catalog-info.yaml (backstage)
 annotations:
-  backstage.io/kubernetes-label-selector: 'backstage=<selector>'
+  backstage.io/kubernetes-label-selector: '<label-selector>'
 ```