Fifth Korean l10n work for release-1.15 (#16231)

* Translate `concepts/scheduling/_index.md` to Korean (#16072)
* Translate concepts/workloads/controllers/replicaset.md in Korean (#16070)
* Update outdated content in dev-1.15-ko.5 (#16162)
* Translate using-api/client-libraries into korean (#16182)
* ko: translate concepts/cluster-administration/proxies (#16030)
* Translate concepts/workloads/controllers/deployment.md in Korean (#16113)

Co-Authored-By: Seokho Son <shsongist@gmail.com>
Co-Authored-By: Eden <longlg88@naver.com>
Co-Authored-By: Yoon <learder@gmail.com>
Co-Authored-By: Sunghoon Kang <me@devholic.io>
Co-Authored-By: Yuk, Yongsu <ysyukr@gmail.com>
Co-Authored-By: June Yi <gochist@gmail.com>

content/ko/docs/tutorials/kubernetes-basics/deploy-app/deploy-intro.html

@@ -104,7 +104,7 @@ weight: 10
             <div class="col-md-8">
                 <p>
                   첫 번째 디플로이먼트로, 도커 컨테이너로 패키지된 Node.js 애플리케이션을 사용해보자.
-                    (Node.js 애플리케이션을 작성하고 Node.js 애플리케이션을 배포하고, 컨테이너를 활용해서 배포해보지 않았다면,
+                    (Node.js 애플리케이션을 작성하고 컨테이너를 활용해서 배포해보지 않았다면,
                     <a href="/ko/docs/tutorials/hello-minikube/">Hello Minikube 튜토리얼</a>의 지시를 따른다.)</p>
                 <p>
 

content/ko/docs/tutorials/stateless-application/expose-external-ip-address.md

@@ -146,12 +146,12 @@ kubectl apply -f https://k8s.io/examples/service/load-balancer-example.yaml
 
 서비스를 삭제하려면, 아래의 명령어를 입력한다.
 
-        kubectl delete services my-service
+    kubectl delete services my-service
 
 Hello World 애플리케이션을 실행 중인 디플로이먼트, 레플리카 셋, 파드를 삭제하려면,
 아래의 명령어를 입력한다.
 
-        kubectl delete deployment hello-world
+    kubectl delete deployment hello-world
 
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