fix usage hint

cngv1.py

@@ -1,3 +1,20 @@
+# coding=utf-8
+# Copyright 2021 The TensorFlow Datasets Authors and the HuggingFace Datasets Authors.
+# Copyright 2021 Phonetics and Speech Laboratory, Trinity College, Dublin
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# Lint as: python3
+
 import os
 from pathlib import Path
 
@@ -71,7 +88,7 @@ class CNGDataset(datasets.GeneratorBasedBuilder):
 
         if not os.path.exists(manual_dir):
             raise FileNotFoundError(
-                "{} does not exist. Make sure you insert a manual dir via `datasets.load_dataset('jimregan/ncg', data_dir=...)` with the path to the corpus directory".format(
+                "{} does not exist. Make sure you insert a manual dir via `datasets.load_dataset('phonlab-tcd/cngv1', data_dir=...)` with the path to the corpus directory".format(
                     manual_dir
                 )
             )