report bucket name when not empty while deleting

[jsoref]

Fixes hashicorp/terraform-provider-google#4820

Release Note Template for Downstream PRs (will be copied)

storage: added `google_storage_bucket` bucket name to the error message when the bucket can't be deleted because it's not empty

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

Thanks for your contribution! A human will be with you soon.

@rileykarson, please review this PR or find an appropriate assignee.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))
Terraform Beta: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[modular-magician]

Oops! It looks like you're using an unknown release-note type in your changelog entries:
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Please only use the types listed in https://github.com/GoogleCloudPlatform/magic-modules/blob/master/.ci/RELEASE_NOTES_GUIDE.md.

[jsoref]

@emilymye: the markdown in #3501 (comment) seems corrupt. ... I can't find the code for @modular-magician.

---

I suspect the intended rendering is:
Oops! It looks like you're using an unknown release-note type in your changelog entries:

• (empty)

Please only use the types listed in https://github.com/GoogleCloudPlatform/magic-modules/blob/master/.ci/RELEASE_NOTES_GUIDE.md.

[rileykarson]

Thanks @jsoref!