Typo in readme

git-svn-id: https://plugins.svn.wordpress.org/feedzy-rss-feeds/trunk@1038364 b8457f37-d9ea-0310-8a92-e5e31aec5664
Typo in readme

git-svn-id: https://plugins.svn.wordpress.org/feedzy-rss-feeds/trunk@1038365 b8457f37-d9ea-0310-8a92-e5e31aec5664