Use ScrollWalkthrough on the npm publishing page

[fern-api]

Summary

Converts the three-step generators.yml sequence in Configure SDK package settings on the TypeScript npm publishing page from <Steps> to <ScrollWalkthrough>.

Previously each step re-pasted the whole generators.yml with a different line highlight ({6-7}, {8}, {9-10}), leaving the reader to diff three near-identical YAML blocks. Now the file is declared once and each step points at it with focus, so the pinned panel highlights the lines that step adds:

- <Steps> + 3x ```yaml {6-7} | {8} | {9-10} title="generators.yml"
+ <ScrollWalkthrough>
+   <Step ... file="generators.yml" focus="6-7" />  # output.location
+   <Step ... file="generators.yml" focus="8" />    # package-name
+   <Step ... file="generators.yml" focus="9-10" /> # config.namespaceExport
+   ```yaml generators.yml (final state, declared once)

Step prose and titles are unchanged; the trailing colons that introduced the removed code blocks are dropped. Headings, anchors, and the Configure GitHub publishing section are untouched.

This page is the template for the other six publishing-to-* pages (PyPI, Maven Central, NuGet, RubyGems, crates.io, Packagist), which share the same progressive-YAML pattern.

Validation

fern check passes: 0 errors.

Requested by: Fern Support

[github-actions]

🌿 Preview your docs: https://fern-preview-fern-scroll-walkthrough-audit.docs.buildwithfern.com/learn

Here are the markdown pages you've updated:

• learn/sdks/generators/typescript/publishing

[fern-api]

Requested by: devin.logan
Slack thread: View conversation

[devalog]

@claude can you review