Add whitespace between paragraphs

[somet-code]

In a couple of instances, paragraphs were not separated by whitespace due to spacing in the code. Whitespace has been added between these paragraphs.

[github-actions]

Thank you!

Thank you for your pull request 😃

🤖 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/carpentries/instructor-training/compare/md-outputs..md-outputs-PR-2009

The following changes were observed in the rendered markdown documents:

 18-preparation.md | 23 ++++++++++++-----------
 md5sum.txt        |  2 +-
 2 files changed, 13 insertions(+), 12 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 2026-05-31 14:00:03 +0000

[brownsarahm]

thanks @somet-code !