[DOCS] Update Homebrew Formulae to be correct

[mattclegg]

Does this appear to be a typo?

[milouse]

I honnestly have no idea of what is this thing. I don't use a Mac, thus I've no idea what is the correct line. Obviously the helm reference here is a typo, but even after I did a quick search to try to find what are these dunn/emacs/helm or dunn/emacs/dracula-emacs, I found nothing (no related github repositories or official homebrew package).

I would like you to show me the proof than dunn/emacs/dracula-emacs is the right thing to have here (link to the related formulae for example). If you cannot, I'll simply remove this lines as deprecated/wrong instructions.

Thank you very much for your help.

[mattclegg]

This is the info about the repository from brew;

$ brew info dunn/emacs/dracula-emacs
dunn/emacs/dracula-emacs: stable 1.2.5, HEAD
Dark color theme available for a number of editors.
https://github.com/dracula/emacs
/usr/local/Cellar/dracula-emacs/1.2.5 (3 files, 18KB) *
  Built from source on 2020-04-02 at 13:16:17
From: https://github.com/dunn/homebrew-emacs/blob/master/Formula/dracula-emacs.rb
==> Requirements
Required: emacs ✔
==> Options
--HEAD
    Install HEAD version
==> Caveats
Emacs Lisp files have been installed to:
  /usr/local/share/emacs/site-lisp/dracula-emacs

It looks right as it's installing from here; brew formula, although it's a bit out of date.

[milouse]

Mmmh, I see a lot of deprecation warnings, MR seem abandoned since september at least and no activity since 1 year. Feel free to open an MR on their side to upgrade the recipe to the new dracula version (they only provide the 1.2.5, which is 4 years old!), but on our side, to avoid bad suprises, I'll remove this information.

[mattclegg]

Yeah it looks like the repo might have been deprecated but let us see; https://github.com/brew-stuff/homebrew-emacs/pull/759 🤞