Fix typo in test.go

[ndouglas]

Fixes a tiny typo.

Target Release

1.8.x

Draft CHANGELOG entry

BUG FIXES

• terraform test -help: Fixed a tiny typo ("Enterpise" -> "Enterprise").

[hashicorp-cla-app]

All committers have signed the CLA.

[hashicorp-cla-app]

Thank you for your submission! We require that all contributors sign our Contributor License Agreement ("CLA") before we can accept the contribution. Read and sign the agreement

Learn more about why HashiCorp requires a CLA and what the CLA includes

_{Have you signed the CLA already but the status is still pending? Recheck it.}

[crw]

Thanks for this submission. We do not normally accept minor changes in comments or help text such as this, but I've flagged it for triage just in case. Thanks again!

[github-actions]

Reminder for the merging maintainer: if this is a user-visible change, please update the changelog on the appropriate release branch.

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active contributions.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.