fix: Tries to fix preview

imagenette.py

@@ -72,7 +72,7 @@ class OpenFire(datasets.GeneratorBasedBuilder):
             description="All images are in their original size.",
             data_url="https://s3.amazonaws.com/fast-ai-imageclas/imagenette2.tgz",
             metadata_urls={
-                "train": f"{_REPO}/full_size/train.txt",
+                "train": f"{_REPO}/imagenette2/train.txt",
                 "validation": f"{_REPO}/imagenette2/val.txt",
             },
         ),