The URL given is a download link that even seems to work.
But I think you're on the wrong track here. Especially because of your obvious lack of prior knowledge.
Please create a new thread and describe your actual problem and what you have done so far in your DokuWiki. If you have to do what is described above, then you have already done something essential wrong. I think that you have not executed the setup script install.php
(see DokuWiki Installation and Installer) or have configured it incorrectly.
- Michael Sy.
Edit: In addition, point 4 describes something you should never do and never have to do. All in all, the instructions above are more misleading than helpful for beginners. You should only use this method if you know what you are doing.