Redirect for stacked-resize screencast?

[tschundler]

The source code links to https://zellij.dev/screencasts/stacked-resize, which is a 404, the real page is https://zellij.dev/tutorials/stacked-resize/

eg https://github.com/zellij-org/zellij/blob/8113ddf9dbbf04bf8bb5e33c8de0e7d55155d277/default-plugins/about/src/pages.rs#L650

Since the code in in a release, there should be a redirect from the link in the code to the real page.