corrected grammar

git-svn-id: https://plugins.svn.wordpress.org/starbox/trunk@941007 b8457f37-d9ea-0310-8a92-e5e31aec5664
better copywriting

git-svn-id: https://plugins.svn.wordpress.org/starbox/trunk@941009 b8457f37-d9ea-0310-8a92-e5e31aec5664