docs: fix typos in Kubernetes and Packetbeat docs

[nightcityblade]

Proposed commit message

Fix two families of typos identified in #49600:

1. "Wether" → "Whether" in Kubernetes autodiscover docs and apiserver field descriptions (3 files)
2. "it's" → "its" (possessive) in Packetbeat redact_headers config and docs (5 files)

See title.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works.
• I have added an entry in ./changelog/fragments

Disruptive User Impact

None. Documentation-only changes.

How to test this PR locally

grep -rn "Wether" libbeat/ metricbeat/ docs/
grep -rn "it's value" packetbeat/ x-pack/packetbeat/ docs/reference/packetbeat/

Both should return no results after this fix.

Related issues

• Closes [text-auditor] Fix clear typo families in Kubernetes/Packetbeat user-facing text #49600

[cla-checker-service]

❌ Author of the following commits did not sign a Contributor Agreement:
7ca109f

Please, read and sign the above mentioned agreement if you want to contribute to this project

[github-actions]

🤖 GitHub comments

Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @nightcityblade? 🙏.
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.

[github-actions]

✅ Vale Linting Results

No issues found on modified lines!

---

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To use Vale locally or report issues, refer to Elastic style guide for Vale.

[github-actions]

🔍 Preview links for changed docs

• docs/reference/metricbeat/exported-fields-kubernetes.md
• docs/reference/packetbeat/packetbeat-http-options.md
• docs/reference/packetbeat/packetbeat-reference-yml.md

[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: ce9ad0f9-116a-45bd-91ba-83694b73ef7d

📥 Commits

Reviewing files that changed from the base of the PR and between 4666186 and 7ca109f.

📒 Files selected for processing (8)

• docs/reference/metricbeat/exported-fields-kubernetes.md
• docs/reference/packetbeat/packetbeat-http-options.md
• docs/reference/packetbeat/packetbeat-reference-yml.md
• libbeat/autodiscover/README.md
• metricbeat/module/kubernetes/apiserver/_meta/fields.yml
• packetbeat/_meta/config/beat.reference.yml.tmpl
• packetbeat/packetbeat.reference.yml
• x-pack/packetbeat/packetbeat.reference.yml

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📝 Walkthrough

Walkthrough

This pull request addresses text corrections across documentation and configuration files. Three occurrences of the spelling error "Wether" are corrected to "Whether" in Kubernetes and autodiscover-related files. Five occurrences of the incorrect possessive "it's" are corrected to "its" in Packetbeat configuration and documentation files. All changes are documentation-only modifications with no impact on code behavior, configuration logic, or exported field definitions.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	All PR changes directly address the typo corrections specified in issue #49600: 'Wether'→'Whether' (3 occurrences) and 'it's'→'its' (5 occurrences) across Kubernetes and Packetbeat documentation files.
Out of Scope Changes check	✅ Passed	All changes are scoped to documentation typo corrections specified in issue #49600; no unrelated code, configuration logic, or out-of-scope modifications are present.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

• 🛠️ Update Documentation: Commit on current branch
• 🛠️ Update Documentation: Create PR

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[vishaangelova]

Hi @nightcityblade, thanks for your contribution. You’ll need to sign the CLA for this PR to be merged. You’ll also have to set up your Beats developer environment, run make update locally, and then commit the updated files because the changes you’re making involve generated docs (refer to Contributing to the docs > Generate the docs for details).