[i18n-KO] Translated docs: ko: pr_checks.md to Korean (#24987)

* docs: ko: pr_checks.mdx

* feat: chatgpt draft

* fix: manual edits

* fix: resolve suggestions

Co-authored-by: Sohyun Sim <96299403+sim-so@users.noreply.github.com>

* feat: chatgpt draft

* fix: manual edits

---------

Co-authored-by: Sohyun Sim <96299403+sim-so@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -153,8 +153,8 @@
       title: (번역중) How to add a pipeline to 🤗 Transformers?
     - local: testing
       title: 테스트
-    - local: in_translation
-      title: (번역중) Checks on a Pull Request
+    - local: pr_checks
+      title: Pull Request에 대한 검사
   title: (번역중) 기여하기
 
 - sections: