Set target on "other plugins" link.

git-svn-id: https://plugins.svn.wordpress.org/average-wysiwyg-helper/trunk@985640 b8457f37-d9ea-0310-8a92-e5e31aec5664
Set target on "other plugins" link.

git-svn-id: https://plugins.svn.wordpress.org/average-wysiwyg-helper/trunk@985642 b8457f37-d9ea-0310-8a92-e5e31aec5664