readme file format fix

git-svn-id: https://plugins.svn.wordpress.org/edd-and-wp-affiliate-integration/trunk@913643 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme file fix try for one more time

git-svn-id: https://plugins.svn.wordpress.org/edd-and-wp-affiliate-integration/trunk@913644 b8457f37-d9ea-0310-8a92-e5e31aec5664