Further readme.txt formatting updates.

git-svn-id: https://plugins.svn.wordpress.org/buzzword-generator-shortcode/trunk@752636 b8457f37-d9ea-0310-8a92-e5e31aec5664
Further (2) readme.txt formatting updates.

git-svn-id: https://plugins.svn.wordpress.org/buzzword-generator-shortcode/trunk@752637 b8457f37-d9ea-0310-8a92-e5e31aec5664