[JOSS Review] Update docs to use asimov-feedstock for conda-forge

[matthewfeickert]

As @danehkar pointed out in his review (openjournals/joss-reviews#4170 (comment)) at the moment the "Installation using conda" instructions

asimov/docs/source/installation.rst

Lines 37 to 45 in fc2b7c1

	Installation using ``conda``
	----------------------------
	It is also possible to install asimov in a conda environment from conda forge.
	You can do this by ensuring that your conda environment is activated, and then running
	.. code-block:: console
	$ conda install -c conda-forge ligo-asimov

tell the user to install from the deprecated ligo-asimov conda-forge feedstock. c.f. conda-forge/ligo-asimov-feedstock#8

These should be migrated to the new (and maintained) https://github.com/conda-forge/asimov-feedstock which is just a change to

.. code-block:: console

		$ conda install -c conda-forge asimov

[matthewfeickert]

@transientlunatic this is a trivial fix and I would just open the MR myself, but can't given openjournals/joss-reviews#4170 (comment) and so will leave this to you.

[matthewfeickert]

Example of this working with https://github.com/conda-forge/asimov-feedstock:

$ docker run --rm -ti mambaorg/micromamba:1.4.1 /bin/bash
(base) mambauser@2488b78d5912:/tmp$ micromamba install -c conda-forge -y asimov
...
(base) mambauser@2488b78d5912:/tmp$ python -m pip show asimov
Name: asimov
Version: 0.4.0
Summary: A Python package for managing and interacting with data analysis jobs.
Home-page: https://git.ligo.org/asimov/asimov
Author: Daniel Williams
Author-email: daniel.williams@ligo.org
License: MIT license
Location: /opt/conda/lib/python3.11/site-packages
Requires: click, flask, gitpython, gwpy, htcondor, igwn-auth-utils, ligo-gracedb, liquidpy, lscsoft-glue, networkx, numpy, otter-report, python-gitlab, pytz, pyyaml, requests, tinydb
Required-by: 
(base) mambauser@2488b78d5912:/tmp$ command -v asimov
/opt/conda/bin/asimov
(base) mambauser@2488b78d5912:/tmp$ asimov init --help
Usage: asimov init [OPTIONS] NAME

  Roll-out a new project.

Options:
  --root TEXT       Location to create the project, default is the current
                    directory.
  --working TEXT    The location to store working directories, default is a
                    directory called 'working' inside the current directory.
  --checkouts TEXT  The location to store cloned git repositories.
  --results TEXT    The location where the results store should be created.
  --user TEXT       The user account to be used for accounting purposes.
                    Defaults to the current user if not set.
  --help            Show this message and exit.
(base) mambauser@2488b78d5912:/tmp$