Docs: Broken /static-file-serving link

[rubengmurray]

What is the documentation issue?

This /static-file-serving link returns a 404. It is linked from the robots-txt page in the SEO learning module

Is there any context that might help us understand?

This is the 2nd link I've encountered in the SEO learning module that I've clicked out to that's returned a 404 (1st: #967). Perhaps there's a broader issue at play?

Does the docs page already exist? Please link to it.

https://nextjs.org/docs/basic-features/static-file-serving