DOC: Update NOTICE to contain the Apache license paragraph

Update `NOTICE` to contain the Apache license notice paragraph.

Co-authored-by: Chris Markiewicz <[email protected]>

NOTICE

@@ -1,6 +1,15 @@
 eddymotion
 Copyright 2021-present The NiPreps Developers <[email protected]>
 
-This software is distributed under the Apache 2.0 License.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may find a copy of the License in the LICENSE file of the
+project root or obtain a copy of the License at
 
-See the LICENSE file in the project root for license information.
+    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.