fix broken indent in bigquery dataset docs

[danawillow]

Effectively upstreams hashicorp/terraform-provider-google-beta#1457

Release Note Template for Downstream PRs (will be copied)

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
I see that this PR has already had some downstream PRs generated. Any open downstreams are already updated to your most recent commit, 9e7b579.

Pull request statuses

No diff detected in terraform-google-conversion.

New Pull Requests

I built this PR into one or more new PRs on other repositories, and when those are closed, this PR will also be merged and closed.
depends: hashicorp/terraform-provider-google-beta#1460
depends: hashicorp/terraform-provider-google#5059
depends: ansible-collections/google.cloud#98
depends: modular-magician/inspec-gcp#259

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
I see that this PR has already had some downstream PRs generated. Any open downstreams are already updated to your most recent commit, 9e7b579.

Pull request statuses

terraform-provider-google-beta already has an open PR.
No diff detected in terraform-google-conversion.
terraform-provider-google already has an open PR.
Ansible already has an open PR.
InSpec already has an open PR.

New Pull Requests

I didn't open any new pull requests because of this PR.