Improve documentation 2

[yerbol-akhmetov]

Changes proposed in this Pull Request

Good day, here I am addressing documentation improvements as a draft PR.

Checklist

• [ ] I consent to the release of this PR's code under the AGPLv3 license and non-code contributions under CC0-1.0 and CC-BY-4.0.
• [ ] I tested my contribution locally and it seems to work fine.
• [ ] Code and workflow changes are sufficiently documented.
• [ ] Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
• [ ] A note for the release notes doc/release_notes.rst is amended in the format of previous release notes, including reference to the requested PR.

[ekatef]

Nice @yerbol-akhmetov :D Minor elements on my side :) @ekatef what about you?

An absolutely fantastic work @yerbol-akhmetov @davide-f!!!

According to my impression, the PR was still in a good shape, while thanks to Davide's review, the documentation has become brilliant. I really like the idea to include a part which relates to validation.

Have added a couple very minor comments and a question on adding a short explanation for essence of the Demand input.

Looking forward to see the PR merged :D

[davide-f]

@ekatef I have no more comments, as you are satisfied, feel free to merge :)

[ekatef]

Merged, which means a dramatic increase in quality of our docs 🎉 🎉 🎉

@yerbol-akhmetov thanks a lot for the awesome contribution.

@davide-f thank you so much for the fantastic support :D