fix train img path

NLVR2.py

@@ -81,11 +81,11 @@ class NLVR2Dataset(datasets.GeneratorBasedBuilder):
         files_path = dl_manager.download_and_extract(urls)
 
         images_files = {
-            "train": os.path.join(_URL_IMG, "images", f'{_SPLITS["train"]}_img.zip'),
+            "train": os.path.join(_URL_IMG, f'{_SPLITS["train"]}_img.zip'),
             "validation": os.path.join(_URL_IMG, f'{_SPLITS["validation"]}_img.zip'),
             "test1": os.path.join(_URL_IMG, f'{_SPLITS["test1"]}_img.zip'),
         }
-        train_img_path = os.path.join(dl_manager.extract(images_files["train"]),  "train")
+        train_img_path = os.path.join(dl_manager.extract(images_files["train"]), "images", "train")
         validation_img_path = os.path.join(dl_manager.download_and_extract(images_files["validation"]),  "dev")
         test1_img_path = os.path.join(dl_manager.download_and_extract(images_files["test1"]),  "test1")
         return [