filter the content[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[D[Dadd missing filter to the content for single docs

git-svn-id: https://plugins.svn.wordpress.org/organized-docs/trunk@917080 b8457f37-d9ea-0310-8a92-e5e31aec5664