[Certbot-dev] Certbot 0.38.0 Release

[Brad Warren]

Certbot 0.38.0 was just released. The changelog entry for this version is:

### Changed

* If Certbot fails to rollback your server configuration, the error message
  links to the Let's Encrypt forum. Change the link to the Help category now
  that the Server category has been closed.
* Replace platform.linux_distribution with distro.linux_distribution as a step
  towards Python 3.8 support in Certbot.

### Fixed

* Fixed OS detection in the Apache plugin on Scientific Linux.

More details about these changes can be found on our GitHub repo.