fixing some readme file formatting

git-svn-id: https://plugins.svn.wordpress.org/all-in-one-wp-security-and-firewall/trunk@925511 b8457f37-d9ea-0310-8a92-e5e31aec5664
some more readme file fixes

git-svn-id: https://plugins.svn.wordpress.org/all-in-one-wp-security-and-firewall/trunk@925512 b8457f37-d9ea-0310-8a92-e5e31aec5664