Doc: Use mkdocs_graphviz as conda package
Related to !4604 (merged)
Write not the package is installed using pip.
It is convenient to deploy it with conda.
Request to the author was sent (https://gitlab.com/rodrigo.schwencke/mkdocs-graphviz/-/issues/3). If he don't answer, it would be good to create a conda forge project for it, or at worst to deploy it on our bcu-ci channel.
Edited by Valentin Valls