docs(all): update to use newer wiki repository

- Update URLs logged by program
- Update README.md links
- Update contributing guide link
- Update issue templates links
- Replace Wiki issue template by link to Gluetun Wiki repository issue creation
- Set program announcement about Github wiki new location

internal/healthcheck/openvpn.go

@@ -16,7 +16,7 @@ type vpnHealth struct {
 func (s *Server) onUnhealthyVPN(ctx context.Context) {
 	s.logger.Info("program has been unhealthy for " +
 		s.vpn.healthyWait.String() + ": restarting VPN " +
-		"(see https://github.com/qdm12/gluetun/wiki/Healthcheck)")
+		"(see https://github.com/qdm12/gluetun-wiki/blob/main/faq/healthcheck.md)")
 	_, _ = s.vpn.loop.ApplyStatus(ctx, constants.Stopped)
 	_, _ = s.vpn.loop.ApplyStatus(ctx, constants.Running)
 	s.vpn.healthyWait += *s.config.VPN.Addition