docs: administration: monitoring: correct filter metric name

[GuangxueCao]

Summary

• Correct the filter metric name in administration/monitoring.md.
• Rename fluentbit_filter_added_records_total to fluentbit_filter_add_records_total.

Evidence

The Fluent Bit source registers this counter with the namespace fluentbit, subsystem filter, and metric name add_records_total, producing fluentbit_filter_add_records_total.

See:

• https://github.com/fluent/fluent-bit/blob/3713988105fffaded9899d2914a42e04ed0e57e7/src/flb_filter.c#L626-L632
• https://github.com/fluent/fluent-bit/blob/3713988105fffaded9899d2914a42e04ed0e57e7/src/flb_filter.c#L274-L287

Testing

• Documentation-only change.
• git diff --check passed.
• Configuration validation could not complete because Docker was unavailable to pull fluent/fluent-bit:latest.

Summary by CodeRabbit

• Documentation
  • Updated the v2 metrics documentation to reflect the corrected name for the filter records metric.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4cfea7fb-c869-415c-964a-02b7924bb0ab

📥 Commits

Reviewing files that changed from the base of the PR and between 52b504e and a0b7bbf.

📒 Files selected for processing (1)

• administration/monitoring.md

Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review.

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📝 Walkthrough

Walkthrough

The v2 metrics table changes fluentbit_filter_added_records_total to fluentbit_filter_add_records_total. Labels, description, type, and unit remain unchanged.

Changes

Monitoring documentation

Layer / File(s)	Summary
Update v2 filter metric name administration/monitoring.md	The documented metric name changes to fluentbit_filter_add_records_total. Its labels, description, type, and unit remain unchanged.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to a0b7b

This documentation-only change corrects the Fluent Bit filter metric name without altering runtime behavior; no actionable merge-blocking risk remains.

Suggested reviewers: eschabell, patrick-stephens

🚥 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 clearly and concisely identifies the documentation change that corrects the filter metric name.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[eschabell]

@GuangxueCao thanks for the docs PR and fix!