[docs] In develop Volto core mention using Python instead of Docker for the backend

[stevepiercy]

We could also mention that it's possible to run the backend without Docker with make start-backend if you have Python installed, but that could wait to be added in a separate PR.

Originally posted by @davisagli in https://github.com/plone/volto/pull/5564#discussion_r1435848692

[Akshat2Jain]

is someone working on this issue or not? @stevepiercy

[stevepiercy]

@Akshat2Jain using your super power of observation, you may see that the green "Open" icon reflects its status, that no one is assigned to it, no one has claimed it, and that there are no linked open pull requests. See Things not to do.