switch to generating fdroid.link links
We've got a new repository link format (fdroidclient#2439 (closed)). I think we should update the links in .../fdroid/repo/index.html to the new fdroid.link repository urls.
We've got a new repository link format (fdroidclient#2439 (closed)). I think we should update the links in .../fdroid/repo/index.html to the new fdroid.link repository urls.