Update rpk-group.adoc

[goojal]

Fix a small typo.

Description

Resolves https://redpandadata.atlassian.net/browse/
Review deadline:

Page previews

Checks

• New feature
• Content gap
• Support Follow-up
• Small fix (typos, links, copyedits, etc)

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 61c6397d-b480-4079-9b1d-94221a2849a6

📥 Commits

Reviewing files that changed from the base of the PR and between d47c541 and 1759261.

📒 Files selected for processing (1)

• modules/reference/pages/rpk/rpk-group/rpk-group.adoc

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📝 Walkthrough

Walkthrough

Two corrections are made to modules/reference/pages/rpk/rpk-group/rpk-group.adoc. The duplicated word "are" is removed from the consumer group partition scaling sentence ("than there are are" → "than there are"). Additionally, the missing // end::single-source[] closing tag marker is added at line 79 to properly close the single-source block.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title is vague and does not clearly convey the specific change made; it merely states the filename without describing the actual fix.	Use a more descriptive title that specifies the change, such as 'Fix duplicate word and close tag in rpk-group.adoc' to clearly communicate the fix at a glance.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description follows the template structure with all major sections present, though the JIRA ticket reference remains incomplete with a placeholder URL.
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

🧪 Generate unit tests (beta)

• Create PR with unit tests

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