Update duckdb index files

.gitattributes

@@ -53,3 +53,4 @@ 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
+pleisto--wikipedia-cn-20230720-filtered/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

pleisto--wikipedia-cn-20230720-filtered/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c6d08609e306e2b213158386cd8492a928fdc6cafceb8f5e6fa97657c8f8b165
+size 662450176