fix(standards): update canonical path to docs/standards/ in platform

Platform repo restructured — standards moved from /standards/ into
/docs/standards/ (AzureLocal/platform#7). Update breadcrumb stub link.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Kristopher Turner

STANDARDS.md

@@ -2,7 +2,7 @@
 
 AzureLocal organization standards are maintained centrally in the [`AzureLocal/platform`](https://github.com/AzureLocal/platform) repository. This repo does **not** keep a local copy.
 
-- **Canonical source**: [`AzureLocal/platform/standards/`](https://github.com/AzureLocal/platform/tree/main/standards)
+- **Canonical source**: [`AzureLocal/platform/docs/standards/`](https://github.com/AzureLocal/platform/tree/main/docs/standards)
 - **Rendered for humans**: [azurelocal.cloud/standards](https://azurelocal.cloud/standards/)
 - **Governance**: [ADR-0002 — Standards as single source of truth](https://github.com/AzureLocal/platform/blob/main/decisions/0002-standards-single-source.md)