Consistent naming of network, domain and worker

[Rene36]

Where?

README.md under Local / 3. Optional - Build your own images

Who?

A novice and beginner should not be confused with different naming conventions, to help him/her getting started. So, the terms should always either be Network, Domain or Worker.

What?

I assume a "Node" = "Domain". Therefore, replace Node with domain in the sentence If you want to build your own custom images, you may do so using the following command for the Node:

Additional Context

The same goes for every time Node is used. Especially because a Node folder does not exist anymore. However, it it still used for example in README.md under Manual Start / Running a Node First install poetry and run poetry install in apps/node