🌐 [i18n-KO] Translated model_doc/patchtsmixer.md to Korean (#33587)

* docs: ko: model_doc/patchtsmixer.md

* feat: nmt draft

* fix: manual edits

* fix: resolve suggestions

Co-authored-by: HyeokJun SHIN <96534680+jun048098@users.noreply.github.com>

* fix: resolve suggestions

---------

Co-authored-by: HyeokJun SHIN <96534680+jun048098@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -749,6 +749,8 @@
         title: Autoformer
       - local: in_translation
         title: (번역중) Informer
+      - local: model_doc/patchtsmixer
+        title: PatchTSMixer
       - local: in_translation
         title: (번역중) Time Series Transformer
       title: 시계열 모델