redux-getting-started page is not found

Hello, thank you for the course and your hard work.
In [useReducer](https://btholt.github.io/complete-intro-to-react-v7/lessons/hooks-in-depth/usereducer) page you say "If not, there's a brief section on it [here](https://btholt.github.io/complete-intro-to-react-v7/redux-getting-started)." however, there is no Redux page on this page and a 404 screen appears.
I don't know if this was done on purpose, but when it didn't come out, I wanted to open an issue about it.

Start with the useReducer lesson page and inspect the linked redux-getting-started URL and its routing or page entry. Confirm whether the destination is missing or the link is outdated; done means the Redux reference resolves to the intended course content instead of a 404 page.

Written by the indexing model from the issue text.