Fix branded CS Discord link

[iviangita]

📋 Anything to add?

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🔗 Work doc - inspirational links

[iviangita]

I'm coordinating this with Vyvy, here's his response so far:

So, the old link is using a discord invite shortener discord.link, which might be closing down soon
This can be easily fixed by setting up a new link from the subdomain discord.commonsstack.org or a new route commonsstack.org/discord

for "setting up new link from the subdomain discord.commonsstack.org", I'd need access to the commonsstack domain config.
for the other option https://commonsstack.org/discord, I could push that to the repo, and someone with access to the repo can merge and redeploy the website