remove datacamp links

[kristi-sara]

remove datacamp links from lesson

[github-actions]

Thank you!

Thank you for your pull request 😃

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Rendered Changes

🔍 Inspect the changes: https://github.com/datacarpentry/r-intro-geospatial/compare/md-outputs..md-outputs-PR-166

The following changes were observed in the rendered markdown documents:

 07-plot-ggplot2.md | 4 +---
 md5sum.txt         | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

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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.

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⏱️ Updated at 2025-03-19 22:46:02 +0000

[kristi-sara]

I know its kinda sus to merge your own pull requests but I think I'm going to merge this since its such a minor issue (removing some links we should not have)