Installation instructions for developers on Windows

[benegee]

Following the installation instructions for developers (https://github.com/trixi-framework/Trixi.jl?tab=readme-ov-file#for-developers) did not work on Windows 11 in powershell.

ERROR: UndefVarError: `..` not defined

We had to escape the quotes, i.e. julia --project=. -e 'using Pkg; Pkg.develop(PackageSpec(path=\"..\"))' worked.
Could we use another easy expression here, which works on all platforms? Something like e.g. dirname(pwd())?

@s6nistam

[ranocha]

Sounds good to me. Could you please make a PR and search for similar patterns in the docs?

[sloede]

Can you maybe cross check with the 0th tutorial that also includes Windows instructions? Maybe they have another approach there or maybe it also needs fixing.