Use the canonical form of the APL2 boilerplate.

Test: repo upload hooks
Change-Id: I49fd4d3131d0cc7f26cdc380d180a950c070541a
diff --git a/libc/NOTICE b/libc/NOTICE
index 63da17c..e2afdbf 100644
--- a/libc/NOTICE
+++ b/libc/NOTICE
@@ -1030,7 +1030,7 @@
 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
+     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,