Update COPA-ca.py

COPA-ca.py

@@ -66,7 +66,7 @@ class copaCa(datasets.GeneratorBasedBuilder):
         """Returns SplitGenerators."""
         urls_to_download = {
             "train": f"{_URL}{_TRAIN_FILE}",
-            "val": f"{_URL}{_DEV_FILE}",
+            "dev": f"{_URL}{_DEV_FILE}",
             "test": f"{_URL}{_TEST_FILE}",
         }
         downloaded_files = dl_manager.download_and_extract(urls_to_download)