Fix setup instructions

[LiamPattinson]

No description provided.

[github-actions]

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🤖 This automated message can help you check the rendered files in your submission for clarity. If you have any questions, please feel free to open an issue in {sandpaper}.

If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

• 🎯 correct output
• 🖼️ correct figures
• ❓ new warnings
• ‼️ new errors

Rendered Changes

🔍 Inspect the changes: https://github.com/ResearchCodingClub/python-testing-for-research/compare/md-outputs..md-outputs-PR-17

The following changes were observed in the rendered markdown documents:

 00-introduction.md | 8 ++++----
 md5sum.txt         | 4 ++--
 setup.md           | 7 +++++--
 3 files changed, 11 insertions(+), 8 deletions(-)

What does this mean?

If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

This output provides a way for you to inspect the output in a diff-friendly manner so that it's easy to see the changes that occur due to new software versions or randomisation.

⏱️ Updated at 2026-02-17 12:02:00 +0000

[LiamPattinson]

I had a failing CI job for this PR, but I can't figure out what it's complaining about. As far as I can tell the lesson is building just fine.