Update xsum-kk3.py

xsum-kk3.py

@@ -135,7 +135,7 @@ class Xsum(datasets.GeneratorBasedBuilder):
         for path, f in files:
             if not split_ids[split_name]:
                 break
-            elif path.startswith(data_dir) and path.endswith(".summarykz"):
+            elif path.startswith(data_dir) and path.endswith(".txt"):
                 i = os.path.basename(path).split(".")[0]
                 if i in split_ids[split_name]:
                     split_ids[split_name].remove(i)