Scripted download of stop releases list fails!

[olf]

@olf

The list of “stop releases” was silently moved away from Zendesk to docs.sailfishos.org, which is generated from GitHub.

And moved again (and its source), but just to the Support sub-directory.
_{Jolla loves to move things around, e.g., the mount-point of SDcards multiple times over the years.}