Fixed configuration docs

[GermanoGuerrini]

Description

As requested by the tech team, I've changed the configuration docs by fixing a typo and using a different notation for username and password.

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.