docs(help-text,combobox,radio-group): updates documentation to properly use negative-help-text

[jnjosh]

Description

Updates doc files for help-text, combobox, and radio-group to properly show examples of using negative help text. This also shows the correct behavior in examples (see screenshots below).

Related issue(s)

• fixes SWC-1088

Screenshots (if appropriate)

Before

After

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Author's checklist

• I have read the CONTRIBUTING and PULL_REQUESTS documents.
• I have reviewed at the Accessibility Practices for this feature, see: Aria Practices
• I have added automated tests to cover my changes.
• I have included a well-written changeset if my change needs to be published.
• I have included updated documentation if my change required it.

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Reviewer's checklist

• Includes a Github Issue with appropriate flag or Jira ticket number without a link
• Includes thoughtfully written changeset if changes suggested include patch, minor, or major features
• Automated tests cover all use cases and follow best practices for writing
• Validated on all supported browsers
• All VRTs are approved before the author can update Golden Hash

Manual review test cases

Documentation Quality

• All files follow template structure with proper collapsible sections
• Summary sections are concise and actionable
• No broken markdown syntax

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7db870a

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[github-actions]

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[github-actions]

Tachometer results

Currently, no packages are changed by this PR...

[coveralls]

Pull Request Test Coverage Report for Build 18841796323

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.966%

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Totals
Change from base Build 18841047631:	0.0%
Covered Lines:	34259
Relevant Lines:	34788

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💛 - Coveralls

[caseyisonit]

OMG ITS GLORIOUS

[jnjosh]

This must have been a lint change, but I think it's right, so I left it. Happy to revert if folks think this is incorrect.

[caseyisonit]

we have linting issues between different users i think, its something we've always accepted but should be more perscriptive in second-gen