DOC: Suggestion to have conda env method mentioned above pip

[arm61]

I know I am not alone in having a python environment that is a mess. So having the docs mention to build in a conda env before a simple pip. I found that I couldn't get autofit_workspace/examples/simple/fit.py to work, and I suspect that my awful base python environment is to blame.

This is very much just a suggestion and not a problem that would limit the JOSS review (no reason you should be put out by my chaotic lifestyle choices).

[Jammy2211]

We actually had the conda instructions first for a long time, but this caused a lot of issues with compatibility / upgrades on other software projects. I think those are fixed now, but I'm of the view that having to do a full conda build to install the software is a bit cumbersome and would recommend people use a virtual environment to do the installation via pip.

[arm61]

Sounds fair. conda is rather slow 🐢