docs:fix spelling mistakes

[zhicheng-ning]

update "worfklow" to "workflow"

Why:

Closes #16491

What's being changed:

“worfklow” to "workflow"

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Content directory changes

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Source	Preview	Production	What Changed
content/pages/getting-started-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site.md	Modified	Original

[ramyaparimi]

@zhicheng-ning
Thanks so much for opening a PR with this fix! I'll get this merged once tests are passing 🍏

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