developed by => developed at

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/compress/trunk@1440692 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/NOTICE.txt b/NOTICE.txt
index 72e09a9..9b5b734 100644
--- a/NOTICE.txt
+++ b/NOTICE.txt
@@ -1,5 +1,5 @@
 Apache Commons Compress
 Copyright 2002-2013 The Apache Software Foundation
 
-This product includes software developed by
+This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).