Regenerate man pages with Sphinx 4.5.0
The Debian 11 (bullseye) Docker image, which GitLab CI uses for building documentation, currently contains the following package versions:
- Sphinx 4.5.0
- sphinx-rtd-theme 1.0.0
- docutils 0.17.1
Regenerate the man pages to match contents produced in a Sphinx environment using the above package versions. This is necessary to prevent the "docs" GitLab CI job from failing.