Fix typo in documentation for dataflow.py

[NewDestinyDan]

Correct a typo where a quotation mark had been typed as an asterisk.

📝 Summary

Fixes a small typo in the dataflow tutorial.

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✅ Merge Checklist

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• Tests have been added for the changes made.

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Project	Deployment	Actions	Updated (UTC)
marimo-docs	Ready	Preview, Comment	Apr 13, 2026 7:53pm

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Pull request overview

Fixes a minor documentation typo in the dataflow tutorial by correcting an accidental * character in the "refs" label.

Changes:

• Corrected ("refs*) to ("refs") in the “References and definitions” markdown content.

[NewDestinyDan]

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