Adds region tag

[kar320]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes # (issue)

Is it been tested?

• [ ] Development testing done

Checklist

• [x ] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code
• [ ] I have performed a peer-reviewed with team member(s)
• [x ] I have commented my code, particularly in hard-to-understand areas
• [x ] I have made corresponding changes to the documentation
• [x ] My changes generate no new warnings
• [x ] Any dependent changes have been merged and published in downstream modules

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 1 region tag.

- [solutions/automations/upload-files/Code.js:20](https://github.com/kar320/apps-script-samples/blob/31246f6ebdd3c07c33c1eab20d2ee46ac94d4a03/solutions/automations/upload-files/Code.js#L20), tag `apps_script_upload_files`

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