Update security-hardening-for-github-actions.md

[fuxingloh]

Why:

Confusing statement, shouldn't it be {% data variables.product.prodname_actions %} instead of {% data variables.product.product_name %}?

What's being changed:

https://docs-3706--patch-1.herokuapp.com/en/actions/learn-github-actions/security-hardening-for-github-actions#considering-cross-repository-access

Before: GitHub is intentionally scoped for a single repository at a time. The GITHUB_TOKEN grants the same level of access as a write-access user, because any write-access user can access this token by creating or modifying workflow files.

After: GitHub Actions is intentionally scoped for a single repository at a time. The GITHUB_TOKEN grants the same level of access as a write-access user, because any write-access user can access this token by creating or modifying workflow files.

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.

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[janiceilene]

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

[shati-patel]

Thank you for fixing this, @fuxingloh! Much appreciated 😃

I'll get this merged shortly.

[shati-patel]

We're looking at the Browser Test failure internally, we can ignore it for now!