Fix Label end tag

[aberus]

PR Summary

</Label) -> </Label>

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 contributors guide.
• Style: This PR adheres to the style guide.

[learn-build-service-prod]

Learn Build status updates of commit d2988a7:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/developer/format/alignment-element-for-tablecolumnheader-for-tablecontrol-format.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/developer/format/label-element-for-tablecolumnheader-for-tablecontrol-format.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/developer/format/tablecolumnheader-element-format.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/developer/format/tableheaders-element-format.md	✅Succeeded	View (>=powershell-5.1)
reference/docs-conceptual/developer/format/width-element-for-tablecolumnheader-for-tablecontrol-format.md	✅Succeeded	View (>=powershell-5.1)

For more details, please refer to the build report.

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[sdwheeler]

@aberus Thanks for the fix.