link in readme.txt changed

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-order-notes-window/trunk@966898 b8457f37-d9ea-0310-8a92-e5e31aec5664
link in readme.txt changed

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-order-notes-window/trunk@966899 b8457f37-d9ea-0310-8a92-e5e31aec5664