🌐 [i18n-KO] Translated blip-2.md to Korean (#33516)

* docs: ko: model_doc/blip-2

* feat: nmt draft

* Apply suggestions from code review

Co-authored-by: Jiwook Han <33192762+mreraser@users.noreply.github.com>

* Update docs/source/ko/model_doc/blip-2.md

Co-authored-by: Yijun Lee <119404328+yijun-lee@users.noreply.github.com>

---------

Co-authored-by: Jiwook Han <33192762+mreraser@users.noreply.github.com>
Co-authored-by: Yijun Lee <119404328+yijun-lee@users.noreply.github.com>

docs/source/ko/_toctree.yml

@@ -684,10 +684,10 @@
         title: (번역중) ALIGN
       - local: in_translation
         title: (번역중) AltCLIP
+      - local: model_doc/blip-2
+        title: BLIP-2
       - local: model_doc/blip
         title: BLIP
-      - local: in_translation
-        title: (번역중) BLIP-2
       - local: in_translation
         title: (번역중) BridgeTower
       - local: model_doc/chameleon