Description

I was going through the installation docs and found the link for all supported installations in the readme gives a 404.

Fpm is available on many platforms and through multiple package managers, see our Documentation webpage for a list of [All Supported Installations](https://fpm.fortran-lang.org/en/how-to/installation.html).

This is the URL:>> https://fpm.fortran-lang.org/en/how-to/installation.html

Even the how-to page seems empty (https://fpm.fortran-lang.org/en/how-to/index.html#how-to), but I think an issue about that should be made in the https://github.com/fortran-lang/fpm-docs repo.

Expected Behaviour

It should redirect to a working page instead of a 404.

Version of fpm

Not relevant

Platform and Architecture

Not relevant

Additional Information

No response