feat(tutorials): Each command in a separate “code snippet”

[stephanbcbauer]

What

The E2E adopter Journey tutorials provides plenty of commands which need to be executed. Currently, more than one commands are in a code snippet section.

command 1
command 2

This should be changed. One command per code snippet section.

command 1

command 2

Why

This makes it more readable and also usable, because the copy paste functionality can be used

[stephanbcbauer]

Will be closed by #570 , done by @awellnitz-materna