Fix example output in "writing functions" episode

[JostMigenda]

This is a follow-up to #607, which added two lines to the print_greeting() function, but forgot to update the output to match.

[github-actions]

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🤖 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}.

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Rendered Changes

🔍 Inspect the changes: https://github.com/swcarpentry/python-novice-gapminder/compare/md-outputs..md-outputs-PR-704

The following changes were observed in the rendered markdown documents:

 16-writing-functions.md | 2 ++
 md5sum.txt              | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

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⏱️ Updated at 2025-11-17 21:06:01 +0000

[alee]

thanks for the fix!