Some recommended ntfy servers cannot be used with FossWarn

[davidhedlund]

https://ntfy.fossman.de/ - The notification was not received

To Reproduce

• nfty:
  • Navigate to Settings
  • Under Default server add: https://ntfy.fossman.de/
• Open FossWarn
  • Settings → Self check

Describe the bug

Notification check
The notification was not received. Please check
your setup again.

https://ntfy.tedomum.net/ - The server responded with RegisterAreaError

To Reproduce

• nfty:
  • Navigate to Settings
  • Under Default server add: https://ntfy.tedomum.net/
• Open FossWarn
  • Settings → Self check

Describe the bug

Something went wrong. Can not subscribe.
Please try again later. The server responded
with RegisterAreaError. Your push service is
invalid or not reachable. Please check your
push notification server.

https://unifiedpush.kde.org

In https://github.com/nucleus-ffm/foss_warn/wiki/What-is-UnifiedPush-and-how-to-select-a-distributor#for-nfty-which-default-server-should-i-use the link https://unifiedpush.kde.org is listed before the server bullet list. I find this just distracting, people will tend to try it since it is the first link they read. Move https://unifiedpush.kde.org after the server bullet list.

Expected behavior
Remove the servers or make a sub-section for them in https://ntfy.tedomum.net/ from https://github.com/nucleus-ffm/foss_warn/wiki/What-is-UnifiedPush-and-how-to-select-a-distributor so people don't mix them with the stable servers.