Elixir 1.16

[angelikatyborska]

Related to #1396

It shouldn't hurt to merge this one because it doesn't affect Exercism infrastructure

No language changes, only documentation.

[github-actions]

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Automated comment created by PR Commenter 🤖.

[jiegillet]

Awesome work, that was a lot.
I didn't click on every link, I guess that's the job of the link checker, but the URLs all look right.

[jiegillet]

I think 1.10 was the first version I ever used, how nostalgic 🥲

[jiegillet]

At this point I checked the remaining https://elixir-lang.org/ left on the repo and it's all good!