Upgrade screenshot of Tails in virtual machine
_Originally created by @sajolida on [#12366 (Redmine)](https://public-redmine-archive.tails.boum.org/code/issues/12366)_
Let’s wait until sajolida or spriver has a pure Debian with some
virtualization to upgrade:
<https://tails.boum.org/doc/advanced_topics/virtualization/tails-in-jessie.png>.
But it shouldn’t block 3.0.
Feature Branch: spriver:doc/12366-upgrade-screenshot-of-tails-in-vm
### Related issues
- **Related to** tails/tails#11742
issue