Changed metadata.annotations to metadata.label to fix kueue.x-k8s.io/queue-name field, according to the official OSS Kueue documentation ([Labels and Annotations](https://kueue.sigs.k8s.io/docs/reference/labels-and-annotations/#kueuex-k8sioqueue-name)). (#2052)

Author: cortespao

batch/kueue-intro/job-team-a.yaml

@@ -18,7 +18,7 @@ kind: Job
 metadata:
   namespace: team-a # Job under team-a namespace
   generateName: sample-job-team-a-
-  annotations:
+  labels:
     kueue.x-k8s.io/queue-name: lq-team-a # Point to the LocalQueue
 spec:
   ttlSecondsAfterFinished: 60 # Job will be deleted after 60 seconds
@@ -45,4 +45,4 @@ spec:
             ephemeral-storage: "512Mi"
             nvidia.com/gpu: "1"
       restartPolicy: Never
-# [END gke_batch_kueue_intro_team_a_job]
+# [END gke_batch_kueue_intro_team_a_job]

batch/kueue-intro/job-team-b.yaml

@@ -18,7 +18,7 @@ kind: Job
 metadata:
   namespace: team-b # Job under team-b namespace
   generateName: sample-job-team-b-
-  annotations:
+  labels:
     kueue.x-k8s.io/queue-name: lq-team-b # Point to the LocalQueue
 spec:
   ttlSecondsAfterFinished: 60 # Job will be deleted after 60 seconds
@@ -45,4 +45,4 @@ spec:
             ephemeral-storage: "512Mi"
             nvidia.com/gpu: "1"
       restartPolicy: Never
-# [END gke_batch_kueue_intro_team_b_job]
+# [END gke_batch_kueue_intro_team_b_job]