🌐 [i18n-KO] Translated bert japanese.md to Korean (#33890)

* docs: ko: bert-japanese.md

* Update _toctree.yml

* fix: manual edits

* Update docs/source/ko/_toctree.yml

Co-authored-by: Sungmin Oh <fabxoe.kor@gmail.com>

* Update docs/source/ko/_toctree.yml

Co-authored-by: Sungmin Oh <fabxoe.kor@gmail.com>

---------

Co-authored-by: Sungmin Oh <fabxoe.kor@gmail.com>
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -330,8 +330,9 @@
         title: (번역중) BERT
       - local: in_translation
         title: (번역중) BertGeneration
+      - local: model_doc/bert-japanese
+        title: 일본어 Bert
       - local: in_translation
-        title: (번역중) BertJapanese
       - local: model_doc/bertweet
         title: Bertweet
       - local: in_translation