remove mention of Hacktoberfest

[tobyhodges]

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

Closes #390

[github-actions]

Thank you!

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

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Rendered Changes

🔍 Inspect the changes: https://github.com/carpentries/lesson-development-training/compare/md-outputs..md-outputs-PR-445

The following changes were observed in the rendered markdown documents:

 collaborating-newcomers.md | 3 ++-
 md5sum.txt                 | 2 +-
 2 files changed, 3 insertions(+), 2 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.

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⏱️ Updated at 2024-11-28 15:05:46 +0000

[anenadic]

All good, thank you @tobyhodges - merge away 🎉 .