Update content/docs/auxiliary-services/authentication.md

[hjr3]

• use latest barricade version
• add required env vars to .devcontainer/.env
• fix FORWARD_URL in .devcontainer/.env
• remove email OTP from .devcontainer/.env to simplify setup
• minor fixes to crates/axum-server/src/*

[github-actions[bot]]

:tada: This PR is included in version 1.1.15 :tada:

The release is available on:

• GitHub release
• v1.1.15
• v1.1.15

Your semantic-release bot :package::rocket: