Added ctx.user to steps

[vitorgamer58]

Refer to: herbsjs/buchu#85

Proposed Changes

1. Added ctx.user inside step docs

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request
• Remember to check if code coverage decrease, if so, please implement the necessary tests

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance