Fixed typo

git-svn-id: https://plugins.svn.wordpress.org/landing-pages-builder/trunk@1026053 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed minor typos

git-svn-id: https://plugins.svn.wordpress.org/landing-pages-builder/trunk@1026055 b8457f37-d9ea-0310-8a92-e5e31aec5664