Fix typo in doc-block for setWindowLocation jest helper

What does this MR do and why?

Just fixing a tiny typo within a doc-block. All credit goes to the cspell vscode extension.

Screenshots or screen recordings

No visual changes.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.