Remove shell injection in example

[soliton-]

Why:

Avoid shell injection in workflow example.

What's being changed (if available, include any code snippets, screenshots, or gifs):

Workflow example

Check off the following:

• I have reviewed my changes in staging (look for the "Automatically generated comment" and click the links in the "Preview" column to view your latest changes).
• For content changes, I have completed the self-review checklist.

[cmwilson21]

@soliton- Thanks so much for opening a PR! I'll get this triaged for review ⚡

[soliton-]

@cmwilson21 Just a reminder. This probably got lost over the holidays. Is there anything I need to do?

[cmwilson21]

@soliton- Thanks for checking in! It's up on the board waiting for review. Someone will have eyes on it soon. 👀

We do appreciate your patience as we are catching up after the holidays 💛

[cmwilson21]

@soliton- Thanks again for your patience here! I checked with the team and this looks like a great addition to the docs. I'll get this merged down once all the tests have passed ✅

Thank you for your interest in improving GitHub Docs! 💖

[cmwilson21]

LGTM 🚢

[github-actions]

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