[DOCS] Edit changelog creation page

[lcawl]

Relates to #3050

This PR cleans up the docs related to the creating changelogs.

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ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between b2d0b40 and 4132938.

📒 Files selected for processing (2)

• docs/cli/changelog/add.md
• docs/contribute/configure-changelogs-ref.md

📝 Walkthrough

Walkthrough

This pull request updates documentation across multiple changelog CLI-related pages. It restructures sections in the add and create-changelogs documentation, adds a new "Product format" reference section to the bundle documentation, consolidates configuration documentation with updated cross-references, and introduces new guidance covering GitHub authorization requirements and label strategy in setup documentation. Reference links throughout are updated to point to newly reorganized or consolidated documentation sections.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title '[DOCS] Edit changelog creation page' accurately describes the main focus of the changes, which involve editing documentation for creating changelogs across multiple related files.
Description check	✅ Passed	The description is related to the changeset, mentioning it 'cleans up the docs related to the creating changelogs' and references issue #3050, which aligns with the documentation updates shown in the raw summary.
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

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch changelog-edits1

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/cli/changelog/add.md`:
- Line 181: Fix the typo in the documentation sentence that reads "If `--repo`
is specified (or `bundle.repo` is set in the changelog configuraiton file),..."
by replacing "configuraiton" with "configuration" so the text correctly
references the changelog configuration file; ensure the sentence continues to
mention `--repo`, `bundle.repo`, and `products.yml` exactly as shown.

In `@docs/contribute/configure-changelogs-ref.md`:
- Around line 188-189: The intro sentence for the pivot example in the changelog
docs has a duplicated verb and a typo: change "The following example contains
demonstrates some GitHub label mappings in the `pivot` section of the chaneglog
configuration file:" to a corrected form such as "The following example
demonstrates some GitHub label mappings in the `pivot` section of the changelog
configuration file:" (or use "contains" instead of "demonstrates") so remove the
duplicate verb and fix `chaneglog` to `changelog`.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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Configuration used: Path: .coderabbit.yaml

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Run ID: 2062103b-24c4-4028-b20d-e72dbb3933d9

📥 Commits

Reviewing files that changed from the base of the PR and between f7641a5 and b2d0b40.

📒 Files selected for processing (6)

• docs/cli/changelog/add.md
• docs/cli/changelog/bundle.md
• docs/contribute/bundle-changelogs.md
• docs/contribute/configure-changelogs-ref.md
• docs/contribute/configure-changelogs.md
• docs/contribute/create-changelogs.md