Fixing hardhat-foundry combined setup page

[Genesis3800]

Hey @fvictorio apologies for being so delayed, but I am pushing a PR to fix an error at the docs as acknowledged in issue #4606 .

I came across this issue while writing this article for the official foundry book, which is now merged:
https://book.getfoundry.sh/config/hardhat

The second section of the article inside Hardhat's docs should now work out of the box.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
hardhat	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 8, 2024 9:04am

[changeset-bot]

⚠️ No Changeset found

Latest commit: 1140eee

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[fvictorio]

Thanks!