docs: Update stale documentation - docs/training/osmo-training.md

[github-actions]

Stale Documentation Detected

File: docs/training/osmo-training.md
Current ms.date: 2026-06-19
Age: 94 days (threshold: 90 days)

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Workflow Run: https://github.com/microsoft/physical-ai-toolchain/actions/runs/35583368833
Detection Date: 2026-09-21

Action Required

• Review and update this documentation file
• Update ms.date frontmatter to current date
• Verify technical accuracy of content
• Close this issue manually after fixes are merged