Fix file permission flags in example

[p-j-smith]

If this pull request addresses an open issue on the repository, please add 'Closes #NN' below, where NN is the issue number.
Closes #317

Please briefly summarise the changes made in the pull request, and the reason(s) for making these changes.
Show correct file permissions in 05-writing-scripts example

Thanks @Parcelli for submitting this issue!

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[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/datacarpentry/shell-genomics/compare/md-outputs..md-outputs-PR-355

The following changes were observed in the rendered markdown documents:

 05-writing-scripts.md | 4 ++--
 md5sum.txt            | 2 +-
 2 files changed, 3 insertions(+), 3 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 2024-04-11 09:02:58 +0000

[vhmcck]

Thanks, Paul. It all looks good!
I will unpin this issue and move a new one to our top 3.
Will come with clarity on what needs to be done from issues #316 and #314.