changed documentation links in readme.txt

git-svn-id: https://plugins.svn.wordpress.org/ibeducator/trunk@1032651 b8457f37-d9ea-0310-8a92-e5e31aec5664
forgot to add space between documentation links

git-svn-id: https://plugins.svn.wordpress.org/ibeducator/trunk@1032657 b8457f37-d9ea-0310-8a92-e5e31aec5664