update key_ID description in text - unique ids

[BourkeCaitlin]

key_ID does not contain duplicate entries and so proposing text change to reflect this as well as modifying example code.

[github-actions[bot]]

Thank you!

Thank you for your pull request :smiley:

:robot: 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:

• :dart: correct output
• :framed_picture: correct figures
• :question: new warnings
• :bangbang: new errors

Rendered Changes

:mag: Inspect the changes: https://github.com/datacarpentry/r-socialsci/compare/md-outputs..md-outputs-PR-505

The following changes were observed in the rendered markdown documents:

 04-tidyr.md | 67 +++++++++++++++++++++++++++++++++----------------------------
 md5sum.txt  |  2 +-
 2 files changed, 37 insertions(+), 32 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.

:stopwatch: Updated at 2024-03-25 13:06:38 +0000

[juanfung]

@BourkeCaitlin this is perfect, thank you! i appreciate the addition of code to check the keys are unique.