Update duckdb index files

.gitattributes

@@ -49,3 +49,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
 *.jpeg filter=lfs diff=lfs merge=lfs -text
 *.webp filter=lfs diff=lfs merge=lfs -text
+lcw99--wikipedia-korean-20221001/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

lcw99--wikipedia-korean-20221001/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e9d89e3816314919d8eaf433fb9bfd5164b684f7d1c32e4b38e01a5b8bf0e8ae
+size 1320693760