Misc changes

[epolack]

You can cherry pick from those commits (I can revert anything left unchecked)

• Some fixes for the documentation
• Some more consistency in the use of named tuples
• @antoine-levitt likes idiom for i = 1:n

  find ./ -type f -name '*.jl' -not -path "*/FourierTransforms.jl/*" -exec sed -E -i 's/in ([0-9]+):/= \1:/g' {} \;

• Fix as docs could not be built locally anymore
• Using artifacts when building doc: I find it really useful to debug the doc as it is always built anyway (e.g., here)

[antoine-levitt]

Sure, all of these look fine to me, thanks!

[mfherbst]

otherwise lgtm

[mfherbst]

Why like this ?

[epolack]

Because locally some warnings may actually be alright (see makedocs).
But you're right, as it does not happen on the DFTK doc, I will revert the behaviour for this point.