fix format (aws#1841)

Author: ChaiBapchya

training/distributed_training/pytorch/data_parallel/mnist/code/train_pytorch_smdataparallel_mnist.py

@@ -1,10 +1,15 @@
 # Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 #
-# Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at
+# Licensed under the Apache License, Version 2.0 (the "License"). You
+# may not use this file except in compliance with the License. A copy of
+# the License is located at
 #
-# http://aws.amazon.com/apache2.0/
+#  http://aws.amazon.com/apache2.0/
 #
-# or in the "LICENSE.txt" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, express or implied. See the License for the specific language governing permissions and limitations under the License.
+# or in the "license" file accompanying this file. This file 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.
 
 from __future__ import print_function