fix: Replace bad .Resource ref with .DataSource in datasourcefw.gtpl

[acwwat]

Description

This PR is to replace the invalid variable reference .Resource with .DataSource in datasourcefw.gtpl which prevented skaff datasource from being run successfully to generate new data source artifacts.

Relations

Closes #39207

References

n/a

Output from Acceptance Testing

$ cd internal/service/synthetics
$ skaff datasource -f -n RuntimeVersion

$

Source code and documentation are generated successfully.

[github-actions]

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[jar-b]

LGTM 🚀

[jar-b]

Thanks for the fix, @acwwat! 👍

[github-actions]

This functionality has been released in v5.67.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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