Several (if not all) images in the ConcreteCMS 9.x documentation have outdated links.
Take the example page https://documentation.concretecms.org/9-x/developers/working-with-blocks/overview#heading-61 (scroll anchor intentional), the images below these headings are not rendered.
The images all link to the old domain, documentation.concrete5.org which should be updated to documentation.concretecms.org.
E.g. http://documentation.concrete5.org/download_file/view/286 should be updated to http://documentation.concretecms.org/download_file/view/286.
Tim