Fix implementation and documentation of init tasks

[gsmet]

The documentation was not in line with the implementation so I fixed things in both (and also fixed some typos in passing).

Fixes #39230

[github-actions]

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[quarkus-bot]

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[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit d3d529c.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

---

Flaky tests - Develocity

⚙️ JVM Tests - JDK 17 Windows

📦 integration-tests/grpc-hibernate

✖ com.example.grpc.hibernate.BlockingRawTest.shouldAdd - History

• Condition with Lambda expression in com.example.grpc.hibernate.BlockingRawTestBase was not fulfilled within 30 seconds. - org.awaitility.core.ConditionTimeoutException

org.awaitility.core.ConditionTimeoutException: Condition with Lambda expression in com.example.grpc.hibernate.BlockingRawTestBase was not fulfilled within 30 seconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:26)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:1006)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:975)
	at com.example.grpc.hibernate.BlockingRawTestBase.shouldAdd(BlockingRawTestBase.java:59)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)

📦 integration-tests/opentelemetry-quickstart

✖ io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest.buildTimeDisabled - History

• Condition with Lambda expression in io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest was not fulfilled within 200 milliseconds. - org.awaitility.core.ConditionTimeoutException

org.awaitility.core.ConditionTimeoutException: Condition with Lambda expression in io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest was not fulfilled within 200 milliseconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:26)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:1006)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:975)
	at io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest.buildTimeDisabled(OpenTelemetryDisabledTest.java:29)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)