Improve TypeScript SDK 3.56.0 changelog with naming configuration samples

[Swimburger]

Summary

Replaces the dense paragraph in the TypeScript SDK 3.56.0 changelog entry with a more actionable version that includes two generators.yml configuration samples:

1. String shorthand — naming: acme
2. Full object form — with individual overrides for namespace, client, error, environment

Also lists the default derived names (e.g. AcmeClient, AcmeError, AcmeTimeoutError, etc.) so users understand what they get out of the box without overrides.

Config schema was verified against generators/typescript-v2/ast/src/custom-config/TypescriptCustomConfigSchema.ts and generators/typescript-v2/browser-compatible-base/src/utils/getNamespaceExport.ts in the fern repo.

Review & Testing Checklist for Human

• Verify the generator name in the YAML examples (fernapi/fern-typescript-node-sdk) matches what users should actually reference in their generators.yml
• Confirm the listed default suffixes (AcmeClient, AcmeError, AcmeTimeoutError, AcmeEnvironment, AcmeEnvironmentUrls, AcmeVersion) are accurate — these were derived from resolveNaming() source code
• Check the rendered MDX in the docs preview to make sure code blocks display correctly with the title="generators.yml" attribute

Notes

• Content-only change — no code or config files modified
• The naming object keys in the full example (namespace, client, error, environment) are a subset; timeoutError, environmentUrls, and version are also valid but omitted from the sample for brevity

Link to Devin session: https://app.devin.ai/sessions/2800abefce964a0e8cb370f9f364ac0a
Requested by: @Swimburger

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[github-actions]

🌿 Preview your docs: https://fern-preview-d9913c7d-32eb-481a-b1f7-11dd5f27522a.docs.buildwithfern.com/learn

Here are the markdown pages you've updated:

• learn/sdks/generators/typescript/changelog/2026/3/13

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[devin-ai-integration]

Closing this PR — the source changelog was updated in fern-api/fern instead (fern-api/fern#13644, now merged). The docs repo changelog will be updated separately to match.