Update description for scaling fields of cloud_run_v2_service

[yanweiguo]

Fix hashicorp/terraform-provider-google#18969.

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[github-actions]

Hello! I am a robot. Tests will require approval from a repository maintainer to run.

@rileykarson, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[yanweiguo]

cc @bskaplan

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 2 files changed, 8 insertions(+), 6 deletions(-))
google-beta provider: Diff ( 2 files changed, 8 insertions(+), 6 deletions(-))

[modular-magician]

Tests analytics

Total tests: 49
Passed tests: 44
Skipped tests: 5
Affected tests: 0

Click here to see the affected service packages

• cloudrunv2

🟢 All tests passed!

View the build log

[rileykarson]

LGTM

Waiting for a service team approver as well, per enrollment in the reviewers' program.