misaligned link
https://doc.zih.tu-dresden.de/software/tensorflow/#tensorflow-in-jupyterhub
At the hint section the JupyterHub link (https://doc.zih.tu-dresden.de/access/jupyterhub/#creating-and-using-a-custom-environment) is working but I believe it's pointing to the wrong page, as this page doesn't have a hash section for it.
I think it shall point to: https://doc.zih.tu-dresden.de/access/jupyterhub_custom_environments/