make NOTICE consistent with boilerplate header

Signed-off-by: LiZhenCheng9527 <[email protected]>

NOTICE

@@ -1,10 +1,21 @@
 %% Kurator NOTICE
 ===========================================
-Copyright (c) Kurator Authors
-Licensed under the Apache License, Version 2.0 (the "License")
+Copyright Kurator Authors.
+
+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.
 
 Downstream projects using code from Kurator must comply with the Apache-2.0 license.
 Code from this project shall not be used in downstream projects that have 
 conflicting licenses.
 ===========================================
-END OF Kurator NOTICE 
+END OF Kurator NOTICE