Bug report: algora.io/discord leads to an invalid Discord invite.

[wiksien]

Description

When the user clicks the Discord button redirect in the footer it leads them to algora.io/discord that redirects them to an invalid Discord invite https://discord.com/invite/9RXD2nqbnG.

Potential Fix

Presuming the fact that the Discord server still exists, create a new Discord invite link that doesn't expire per Discord documentation and update line 17 in config.exs file to reflect the updated redirect link.

[balupton]

same with the discord link in the readme