Fix Docs Build Broken Relative Source Links

Summary

Fixed the Quantago docs build failure caused by Docusaurus treating source-file markdown links inside an update note as broken site-relative pages.

Root Cause

In docs/updates/05-01-2026/saas-stack/ctrader-2132-timeout-hardening.md, two references were written as markdown links:

• services/backend/src/lib/ctrader/ctrader-order.ts
• services/backend/src/lib/brokers/pepperstone-adapter.ts

Inside Docusaurus content pages, those were resolved as documentation routes under the current page path, which do not exist.

Fix

Converted those source references from markdown links to plain inline code paths.

Validation

Ran:

cd /Users/adam/github/saas-stack/projects/quantago/services/docs && pnpm build

Result:

• Docusaurus build passed successfully.
• Existing webpack warning about vscode-languageserver-types remains non-blocking.