fix img url

NLVR2.py

@@ -81,9 +81,9 @@ class NLVR2Dataset(datasets.GeneratorBasedBuilder):
         files_path = dl_manager.download_and_extract(urls)
 
         images_files = {
-            "train": os.path.join(_URL_IMG, f'{_SPLITS["train"]}.zip'),
-            "validation": os.path.join(_URL_IMG, f'{_SPLITS["validation"]}.zip'),
-            "test1": os.path.join(_URL_IMG, f'{_SPLITS["test1"]}.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")
         validation_img_path = os.path.join(dl_manager.download_and_extract(images_files["validation"]),  "dev")