Problem to proceed in relational databases, building boilerplate step1

Hi!
First of all, I’m sorry if my English isn’t very good and if my explanation isn’t very clear.
I managed to set up Codespaces and completed the first step, which was to type echo “Hello Terminal” in the terminal.
However, when I click the Run button, nothing happens on the instructions page or in the terminal.
Could someone please explain how to proceed to the next step?
Note: I’m a screen reader user, so I may need instructions from an NVDA perspective. Thanks in advance!