trying to fix dataset preview

neumarco.py

@@ -2,8 +2,9 @@ import tarfile
 import os
 import datasets
 
-_URL = "https://huggingface.co/datasets/neuclir/neumarco/resolve/main/data/neumarco.tar.gz"
-
+_URLS = {
+  "neumarco": "https://huggingface.co/datasets/neuclir/neumarco/resolve/main/data/neumarco.tar.gz"
+}
 
 class Neumarco(datasets.GeneratorBasedBuilder):
     VERSION = datasets.Version("1.0.0")
@@ -17,12 +18,12 @@ class Neumarco(datasets.GeneratorBasedBuilder):
         )
 
     def _split_generators(self, dl_manager):
-        path = dl_manager.download(_URL)
+        paths = dl_manager.download(_URLS)
         return [
             datasets.SplitGenerator(
                 name=lang,
                 gen_kwargs={
-                    "filepath": path,
+                    "filepath": paths['neumarco'],
                     "tarpath": f'eng-{lang}/msmarco.collection.20210731-scale21-sockeye2-tm1.tsv'
                 })
             for lang in ['fas', 'rus', 'zho']