Update Helix editor config

[rsjethani]

Helix editor version 23.10 changes the way language servers are configured. See https://helix-editor.com/news/release-23-10-highlights.

[mvdan]

Do you mean with Helix 23.05, or master? It seems like the config format changed with multi-lsp support: helix-editor/helix@71551d3

I think we want to document what works with stable, not the latest development version. And, as of 23.05, I still see this in the default languages file:

[[language]]
name = "go"
scope = "source.go"
injection-regex = "go"
file-types = ["go"]
roots = ["go.work", "go.mod"]
auto-format = true
comment-token = "//"
language-server = { command = "gopls" }
# TODO: gopls needs utf-8 offsets?
indent = { tab-width = 4, unit = "\t" }

I'm more than happy to merge once Helix does another release, though. Hopefully soon.

[rsjethani]

Ohh yes! you are right @mvdan. I completely ignored the fact that I am using development version 😆

Sure lets merge later as you suggested. Thanks!

[rsjethani]

I will update description and general PR tone to be a normal update rather than a bug fix once Helix version is out.

[mvdan]

The release is finally out :) Could you please double check that this config works with it, and update the commit message to explain that the release changed the config format?

[rsjethani]

@mvdan done!

[mvdan]

Thanks!