Update parquet files

mteb--raw_medrxiv/json-train.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:e3f3812f5fecf63e9517df1d21d865f14684ea4af42d19b4914955cfe030bcdd
-size 20157998
+oid sha256:66f4c3502df2028111c743cdaa5e5a9fbe7658ac5fdbc5490eb2ddacc3a882c3
+size 19927855