Update kubernetes.md (#48082)

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## Why are these changes needed?
Fixed typo

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---------

Signed-off-by: mohitjain2504 <87856435+mohitjain2504@users.noreply.github.com>
Signed-off-by: Richard Liaw <rliaw@berkeley.edu>
Co-authored-by: Richard Liaw <rliaw@berkeley.edu>
Co-authored-by: Gene Der Su <gdsu@ucdavis.edu>

doc/source/serve/production-guide/kubernetes.md

@@ -72,7 +72,7 @@ rayservice-sample   7s
 
 $ kubectl get pods
 NAME                                                      READY   STATUS    RESTARTS   AGE
-ervice-sample-raycluster-454c4-worker-small-group-b6mmg   1/1     Running   0          XXs
+service-sample-raycluster-454c4-worker-small-group-b6mmg  1/1     Running   0          XXs
 kuberay-operator-7fbdbf8c89-4lrnr                         1/1     Running   0          XXs
 rayservice-sample-raycluster-454c4-head-krk9d             1/1     Running   0          XXs