developed by => developed at : see http://www.apache.org/legal/report…

…s.html#2006-05-24 section 6C

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpasyncclient/trunk@1631719 13f79535-47bb-0310-9956-ffa450edef68

NOTICE.txt

@@ -1,5 +1,5 @@
 Apache HttpComponents AsyncClient
 Copyright 2010-2014 The Apache Software Foundation
 
-This product includes software developed by
+This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).