in_kafka: Add async_commit description

[HaChanho]

Corresponding PR is: fluent/fluent-bit#8894

Summary by CodeRabbit

• Documentation
  • Updated Kafka input configuration documentation to include a new async_commit parameter for enabling asynchronous commit operations (defaults to false).

[lockewritesdocs]

Left a suggestion to change the language a bit. Thanks!

[lockewritesdocs]

When #8894 merges, I'll get this one merged as well. Thanks @HaChanho!

[eschabell]

@HaChanho can you resolve the conflicts here in this PR? I've nudged you on the same for the corresponding code PR fluent/fluent-bit#8894 to see if we can get these merged.

this has had heavy editing since Adam's request.

[esmerel]

I fixed the conflict and made the addition consistent with our guidelines.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: eba04998-8d74-4deb-9512-b541a49ada34

📥 Commits

Reviewing files that changed from the base of the PR and between 5231934 and 8e3e5fd.

📒 Files selected for processing (1)

• pipeline/inputs/kafka.md

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📝 Walkthrough

Walkthrough

The Kafka input documentation table is updated to add a new async_commit boolean configuration parameter (default false) that controls asynchronous commit behavior. The rdkafka.{property} row is reformatted. Both changes remain within the same configuration parameter documentation section.

Changes

Kafka input configuration documentation

Layer / File(s)	Summary
Kafka input configuration parameters pipeline/inputs/kafka.md	Configuration parameter table adds async_commit boolean option for asynchronous Kafka commit operations (default false) and updates the rdkafka.{property} table entry formatting.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• fluent/fluent-bit-docs#2269: Modifies pipeline/inputs/kafka.md to standardize Kafka input configuration documentation table entries including rdkafka.{property} formatting.

Suggested labels

4.2.1

Poem

🐰 A kafka stream flows swift and true,
With async commits to see us through,
The table now shines with clearer sight,
Configuration documented right! 📚✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change—adding documentation for the async_commit parameter in the Kafka input plugin.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

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• Create PR with unit tests

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[eschabell]

@HaChanho fixed the conflict.

[eschabell]

@HaChanho just waiting on code PR merging.