🌐 [i18n-KO] Translated generation_strategies.md to Korean (#29086)

* Update ko _toctree.yml

* Create ko: generation_strategies.md

* Apply suggestions from code review
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>

* Apply suggestions from code review
Co-authored-by: Jungnerd <46880056+jungnerd@users.noreply.github.com>

* Apply suggestions from code review
Co-authored-by: Jungnerd <46880056+jungnerd@users.noreply.github.com>

---------
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>
Co-authored-by: Jungnerd <46880056+jungnerd@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -87,8 +87,8 @@
       title: 🤗 Tokenizers 라이브러리에서 토크나이저 사용하기
     - local: multilingual
       title: 다국어 모델 추론하기
-    - local: in_translation
-      title: (번역중) Customize text generation strategy
+    - local: generation_strategies
+      title: 텍스트 생성 전략 사용자 정의
     - local: create_a_model
       title: 모델별 API 사용하기
     - local: custom_models