fix Wordle command and mentions to dev extra

[anakin87]

Description

• use vf-eval wordle instead of vf-eval vf-wordle (that does not work)
• remove remaining mentions to the dev extra (dev is no longer an extra but a dependency group and cannot be installed with uv add 'verifiers[dev]')

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Test improvement

Testing

• All existing tests pass when running uv run pytest locally.
• New tests have been added to cover the changes

Checklist

• My code follows the style guidelines of this project as outlined in AGENTS.md
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published

Additional Notes

[anakin87]

@mikasenghaas Feel free to merge...

As a contributor, I cannot do that.

[anakin87]

@willccbb this is ready to be merged.