primer/alpha/tooltip: Fix typos in the description of the component

[issyl0]

What are you trying to accomplish?

• Fix some typos I noticed while reading https://primer.style/product/getting-started/rails/components/tooltip/.

Screenshots

• None.

Integration

• No.

List the issues that this change affects.

• None. Just some typo fixes.

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.

What approach did you choose and why?

• Fixed the typos.

Anything you want to highlight for special attention from reviewers?

• No.

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Lookbook)
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge

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[changeset-bot]

⚠️ No Changeset found

Latest commit: d014fcd

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[Copilot]

Pull Request Overview

This PR fixes typos in the documentation comments for the Primer Alpha Tooltip component to improve clarity and readability.

• Fixed grammatical errors in the tooltip component's description comments
• Removed an orphaned content fragment and corrected article usage

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