fix 'shaddow' typo

[ph1ll]

Fixing a small typo

[msftclas]

Hi @ph1ll, I'm your friendly neighborhood Microsoft Pull Request Bot (You can call me MSBOT). Thanks for your contribution!

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[msftclas]

@ph1ll, Thanks for signing the contribution license agreement so quickly! Actual humans will now validate the agreement and then evaluate the PR.

Thanks, MSBOT;

[alexdima]

Thank you!