Fix formatting issues in required-development-guidelines.md

[baardhermansen]

PR Summary

The smallest of changes, only corrected 'a' to 'of' and removed a superfluous parenthesis end.

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributor's guide.
• Style: This PR adheres to the style guide.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Fixes minor documentation grammar/punctuation issues in the cmdlet required development guidelines.

Changes:

• Corrects “common set a parameters” to “common set of parameters”.
• Removes an extraneous closing parenthesis in the “Force parameter” guidance sentence.

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[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

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[learn-build-service-prod]

Learn Build status updates of commit 7f2f5f2:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/developer/cmdlet/required-development-guidelines.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.