fix val and test

pubmed-summarization.py

@@ -99,8 +99,8 @@ class PubMedSummarizationDataset(datasets.GeneratorBasedBuilder):
         train_files = _subset_filenames(dl_paths, datasets.Split.TRAIN)
         """
         train_path = dl_manager.download_and_extract(self._TRAIN_FILE) + "/train.txt"
-        val_path = dl_manager.download_and_extract(self._VAL_FILE) + "/test.txt"
-        test_path = dl_manager.download_and_extract(self._TEST_FILE) + "/val.txt"
+        val_path = dl_manager.download_and_extract(self._VAL_FILE) + "/val.txt"
+        test_path = dl_manager.download_and_extract(self._TEST_FILE) + "/test.txt"
         print("PATHS\n", train_path, val_path, test_path)
         
         return [