Fix `xec.paybutton.org` websocket

[Klakurka]

.io works fine and we currently have it open to the public but we will change that as soon as we get .org working.

[Klakurka]

We currently have .org on chronik.cash so we do want to get this fixed pretty soon if we can.

[Klakurka]

On my personal test page when trying to open sideshift:

Possibly just trying to test .org a while back, not sure.