DRAFT: markdown demo file

[sdwheeler]

PR Summary

DRAFT: markdown demo file

PR Checklist

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

[learn-build-service-prod[bot]]

Learn Build status updates of commit e18ab96:

:warning: Validation status: warnings

File	Status	Preview URL	Details
reference/docs-conceptual/community/contributing/markdown-demo.md	:warning:Warning	View (>=powershell-5.1)	Details

reference/docs-conceptual/community/contributing/markdown-demo.md

• Line 24, Column 1: [Warning: multiple-h1s - See documentation] Multiple H1s(H1 'H1 header text') are not allowed. You can only have one top-level heading.

For more details, please refer to the build report.

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[sdwheeler]

Created this PR to preview rendering. Closing.