Subject: [DOCUMENTATION] doc: Expand origin-Reference section

From: Christina O'Donnell <[email-masked]>
Date: Sat, 14 Oct 2023 16:34:12 +0100

Err I forgot to add details..

Hi Guix,

This is my first patch to Guix. Janneke asked me to fill in the documentation for `svn-fetch`.

This patch should contain the documentation for:

- `hg-reference`
- `svn-fetch`
- `svn-reference`
- `bzr-fetch`
- `bzr-reference`

This should now cover all currently supported origin methods:

- local
- Git
- Mercurial
- Subversion
- Bazaar

One thing I was unsure about was whether `svn-reference` had a field `recursive?`. However, from what I could find, Subversion has no equivalent to Git's sub-modules. However, I documented Subversion's `recursive?` with what it would do if it did anything sensible.

I would be delighted to make any corrections needed!

Kind regards,
- Christina O'Donnell