documentationgood first issue
Description
What kind of documentation issue is this?
Incorrect documentation
Affected page
https://toga.beeware.org/en/latest/reference/platforms/
Describe the issue
At https://toga.beeware.org/en/latest/reference/platforms/, if you click on all the platforms, Qt is missing a screenshot for the demo app; Windows screenshot uses Win10 style; and macOS screenshot uses an extremely ancient style.
Suggested improvement
Update screenshots for all desktop platforms; mobile and web/textual doesn't have enough widgets or structures to run the demo app yet. Align the screenshots with the homepage screenshots as well.