Correct typo in reusing-workflows.md

[jstvz]

Why:

are not be propagated ➡️ are not propagated

What's being changed:

Check off the following:

• I have reviewed my changes in staging (look for the latest deployment event in your pull request's timeline, then click View deployment).
• For content changes, I have completed the self-review checklist.

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• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

[welcome]

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[ramyaparimi]

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

[ethanpalm]

👋🏼 Thanks for creating this PR, @jstvz! Your change looks great. I'll get this merged once the branch is up to date and all checks are passing.

Thanks for taking the time to contribute to the GitHub docs!

[github-actions]

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