[Doc] fix use_performance_counters documented default value as false

[jguay]

Proposed commit message

This is just fixing documentation about default value of use_performance_counters being false (since 8.16) and not true

Disruptive User Impact

None

How to test this PR locally

Doc change so no particular test needed

Related issues

Use cases

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Screenshots

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Logs

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[github-actions]

🤖 GitHub comments

Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)
• /test : Run the Buildkite pipeline.

[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @jguay? 🙏.
For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-8./d is the label to automatically backport to the 8./d branch. /d is the digit
• backport-active-all is the label that automatically backports to all active branches.
• backport-active-8 is the label that automatically backports to all active minor branches for the 8 major.
• backport-active-9 is the label that automatically backports to all active minor branches for the 9 major.

[coderabbitai]

Caution

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📝 Walkthrough

Walkthrough

In metricbeat/module/system/core/_meta/docs.md, a single line was updated: the typo "machins" was corrected to "machines" and the documented default value for use_performance_counters was changed from true to false.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

• 🛠️ Update Documentation

Warning

Tools execution failed with the following error:

Failed to run tools: 14 UNAVAILABLE: read ECONNRESET

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[infra-vault-gh-plugin-prod]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)

[ebeahan]

@jguay please try running make check locally - looks like these changes propagate to another file which needs committed as well: https://github.com/elastic/beats/actions/runs/28454447514/job/84325241712?pr=51657