Update 21 files

- /doc.zih.tu-dresden.de/docs/jobs_and_resources/capella.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm_examples.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/barnard.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/overview.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/power9.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/alpha_centauri.md
- /doc.zih.tu-dresden.de/docs/jobs_and_resources/slurm_limits.md
- /doc.zih.tu-dresden.de/docs/software/machine_learning.md
- /doc.zih.tu-dresden.de/docs/software/gpu_programming.md
- /doc.zih.tu-dresden.de/docs/software/data_analytics_with_r.md
- /doc.zih.tu-dresden.de/docs/software/tensorflow.md
- /doc.zih.tu-dresden.de/docs/software/pytorch.md
- /doc.zih.tu-dresden.de/docs/software/compilers.md
- /doc.zih.tu-dresden.de/docs/data_lifecycle/working.md
- /doc.zih.tu-dresden.de/docs/data_lifecycle/workspaces.md
- /doc.zih.tu-dresden.de/docs/access/ssh_login.md
- /doc.zih.tu-dresden.de/docs/access/jupyterhub.md
- /doc.zih.tu-dresden.de/docs/access/jupyterhub_custom_environments.md
- /doc.zih.tu-dresden.de/docs/access/jupyterlab.md
- /doc.zih.tu-dresden.de/docs/access/key_fingerprints.md
- /doc.zih.tu-dresden.de/mkdocs.yml