Link to Modern CMake chapter is broken

[loonatick-src]

The first link in the README is broken.

[1] : Intro Modern CMake. url: https://cliutils.gitlab.io/modern-cmake/chapters/basics/structure.html

Looks like the author changed the layout of the website and the new link is now https://cliutils.gitlab.io/modern-cmake/structure/

The original link can be found on archive.org (https://web.archive.org/web/20260212030431/https://cliutils.gitlab.io/modern-cmake/chapters/basics/structure.html) if you would like to refer to the document that you referred to at the time of creating this project.

[jfdev001]

Good catch! If you want to open a PR, feel free, otherwise, I will get to this later :) cheers!