Links are outdated for XCSoar-testing (page not found) and nightly-build (404) version

[MikeJaras]

This section on link:
Download XCSoar-testing (for Android) or the nightly-build version of XCSoar, test it on the ground only, and report bugs. This version is unstable, so do not use it in flight.

[lordfolken]

Why don't you create a PR?

[lordfolken]

i don't think we have a testing version anylonger. There is still some trouble with the "nighly builds" upload, however it can be downloaded from the current build actions on github.

[MikeJaras]

Why don't you create a PR?

Not sure what to do, give me a hint and I'll try it out..