docs: Clarify naming conventions for deletion_protection

[bw-yuhogg]

If your API does not literally call its field deletion_protection, neither should your Terraform field.

Release Note Template for Downstream PRs (will be copied)

[modular-magician]

Hello! I am a robot. It looks like you are a: Community Contributor Googler Core Contributor. Tests will run automatically.

@SarahFrench, 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.

[modular-magician]

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

Diff report

Your PR hasn't generated any diffs, but I'll let you know if a future commit does.

[modular-magician]

Tests analytics

Total tests: 3037
Passed tests 2736
Skipped tests: 297
Affected tests: 4

Action taken

Found 4 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccMonitoringMonitoredProject_monitoringMonitoredProjectLongFormExample|TestAccMonitoringMonitoredProject_projectNumShortForm|TestAccMonitoringMonitoredProject_projectNumLongForm|TestAccMonitoringMonitoredProject_monitoringMonitoredProjectBasicExample

Get to know how VCR tests work

[modular-magician]

$\textcolor{green}{\textsf{Tests passed during RECORDING mode:}}$
TestAccMonitoringMonitoredProject_monitoringMonitoredProjectLongFormExample[Debug log]
TestAccMonitoringMonitoredProject_projectNumShortForm[Debug log]
TestAccMonitoringMonitoredProject_projectNumLongForm[Debug log]
TestAccMonitoringMonitoredProject_monitoringMonitoredProjectBasicExample[Debug log]

Rerun these tests in REPLAYING mode to catch issues

$\textcolor{green}{\textsf{No issues found for passed tests after REPLAYING rerun.}}$

---

$\textcolor{green}{\textsf{All tests passed!}}$
View the build log or the debug log for each test

[c2thorn]

Taking over the review based on earlier conversation