reorganize example

### Scenarios

<!-- Using the Gherkin syntax (see https://cucumber.io/docs/gherkin/reference/)

describe several scenarios of the job working. Example for Gitlab release

creation job:

describe several scenarios of the job working. The scenario must include at

least 3 parts :

* Given: Steps used to describe the initial context of the system.

* When:  Steps used to describe an event, or an action.

* Then:  Steps used to describe an expected outcome, or result.

Example for Gitlab release creation job:

Scenario: With a `CHANGELOG.md` file

* Given there is a `CHANGELOG.md` file in repository

* When the job is run on a pipeline on default branch