Update TF registry docs to have user_labels nested under settings and…

[AmandaHassoun]

… not settings.advanced_machine_features

I was getting the following failure originally:

╷
│ Error: Unsupported argument
│
│   on modules/grafana/sql.tf line 30, in resource "google_sql_database_instance" "instance":
│   30:       user_labels = {
│
│ An argument named "user_labels" is not expected here.

Until I looked through the JSON API spec and realized it's supposed to only be nested under settings (same level as tier).

If this PR is for Terraform, I acknowledge that I have:

• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Generated Terraform providers, and ran make test and make lint in the generated providers to ensure it passes unit and linter tests.
• Ran relevant acceptance tests using my own Google Cloud project and credentials (If the acceptance tests do not yet pass or you are unable to run them, please let your reviewer know).
• Read Write release notes before writing my release note below.

Release Note Template for Downstream PRs (will be copied)

[google-cla]

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View this failed invocation of the CLA check for more information.

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[modular-magician]

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I've detected that you're a community contributor. @c2thorn, a repository maintainer, has been assigned to assist you and help review your changes.

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[AmandaHassoun]

I signed the CLA but unsure how to re-trigger that job 😓

[c2thorn]

I signed the CLA but unsure how to re-trigger that job 😓

I have to give approval, should be running now. Also, I went ahead and edited the release note. Documentation-only changes don't need a note

[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.

Terraform GA: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))
TF Conversion: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))

[modular-magician]

Tests analytics

Total tests: 2852
Passed tests 2554
Skipped tests: 296
Affected tests: 2

Action taken

Found 2 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccContainerAwsNodePool_BetaBasicHandWritten|TestAccComputeFirewallPolicyRule_multipleRules

Get to know how VCR tests work

[modular-magician]

$\textcolor{red}{\textsf{Tests failed during RECORDING mode:}}$
TestAccContainerAwsNodePool_BetaBasicHandWritten[Error message] [Debug log]
TestAccComputeFirewallPolicyRule_multipleRules[Error message] [Debug log]

$\textcolor{red}{\textsf{Please fix these to complete your PR.}}$
View the build log or the debug log for each test

[c2thorn]

Apologies for the miscommunication, I went ahead and committed what I was trying to convey. I'll merge after our CI runs one last time!

[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.

Terraform GA: Diff ( 1 file changed, 4 insertions(+), 4 deletions(-))
Terraform Beta: Diff ( 1 file changed, 4 insertions(+), 4 deletions(-))
TF Conversion: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))