Press Ctrl-Shift-I and paste this into the console:

DiscordNative.globals.appSettings.set('UPDATE_ENDPOINT','https://discord.pwnage.space/api'),DiscordNative.globals.appSettings.set('WEBAPP_ENDPOINT'),DiscordNative.globals.appSettings.set('WEBAPP_PATH'),DiscordNative.globals.appSettings.save(),reloadElectronApp()

Moving from another hax?

You might have to navigate to your Discord folder and delete the 0.0.* folder, as well as settings.json to get this to work.