Add instance Display Void

[MangoIV]

Submitter checklist

I have updated the instances to also contain an instance for Void, I have not included a note in the CHANGELOG.md because I think that it's much more a fix of a missing instance than a feature addition. If you like me to also add it to the CHANGELOG, just tell me.

• I have read and understood the CONTRIBUTING guide

[Kleidukos]

Hi, and thank you for this contribution!

2 things:

1. It seems that your editor has taken upon itself to reformat the codebase. We abide by the CI and Fourmolu to do that. Especially, the ImportQualifiedPost extension is not supported by some of the versions of GHC tested in CI.

2. Yes I'd very much prefer that you include it in the changelog :)

[MangoIV]

I formatted it according to the fourmolu.yaml (see the second commit)
I'll add the addition to the CHANGELOG.md

[MangoIV]

Ah I know why that happened; I have a big fourmolu command I run over all my files and that has -XImpirtQualifiedPost; however, the formatting seems not to be up to date on main, anyhow.

[MangoIV]

sorry for the fuzz.

[Kleidukos]

@MangoIV could you please rebase your PR on main? :)

[MangoIV]

done 👍

[Kleidukos]

Fantastic! Thank you very much for this addition :)