fix typo in finding and customizing actions

[tr1ms]

Why:

fixes #2290

What's being changed:

Typo in Finding and customizing actions

Check off the following:

• I have reviewed my changes in staging. (look for the deploy-to-heroku link in your pull request, then click View deployment)
• For content changes, I have reviewed the localization checklist
• For content changes, I have reviewed the Content style guide for GitHub Docs.

[janiceilene]

@gsonly Thank you so much for opening a PR! I hadn't realized when I transferred this issue from an internal report that the typo had already been fixed in 09aaf2c. I'm going to close this PR, but we very much appreciate the contribution 💖

[tr1ms]

Thanks