Add links to Prefect/Airflow videos (#7063)

Our section on batch jobs can now link to existing tutorials. Hence the
PR.

Author: koaning

docs/guides/deploying/scheduled.md

@@ -38,7 +38,7 @@ jobs:
 
 ## Alternatives
 
-For tools like Airflow and Prefect, you can also choose to reuse parts of a marimo notebook in larger Python batch jobs. Check the [docs on reusing functions](https://docs.marimo.io/guides/reusing_functions/) if you're interested in that.
+For tools like Airflow and Prefect, you can also choose to reuse parts of a marimo notebook in larger Python batch jobs. Check the [docs on reusing functions](https://docs.marimo.io/guides/reusing_functions/) or [this Prefect tutorial on YouTube](https://www.youtube.com/watch?v=CvSbGTFCpF4) if you're interested in that. For Airflow specifically it might make also sense to write a custom operator, see [this tutorial on YouTube](https://www.youtube.com/watch?v=ITuUYW14ToA) for more details.
 
 Alternatively, you may be interested in having specific cells in marimo run on an automated schedule as you have the notebook open. The simplest way to do that is to use the [mo.ui.refresh](https://docs.marimo.io/api/inputs/refresh/#marimo.ui.refresh) widget to manually specify how often a cell needs to rerun.