fix shortcode documentation

git-svn-id: https://plugins.svn.wordpress.org/yakadanda-instagram/trunk@972232 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix shortcode documentation

git-svn-id: https://plugins.svn.wordpress.org/yakadanda-instagram/trunk@972235 b8457f37-d9ea-0310-8a92-e5e31aec5664