Update duckdb index files

.gitattributes

@@ -68,3 +68,4 @@ wrong_binary_operator_datasets/train/index.duckdb filter=lfs diff=lfs merge=lfs
 exception_datasets/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text
 exception_datasets/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 exception_datasets/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+function_docstring_datasets/dev/index.duckdb filter=lfs diff=lfs merge=lfs -text

function_docstring_datasets/dev/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a2269149d9676e83992a9246503b029741b49d9b34ea86551a0da8a81956fe25
+size 57683968