docs: fix sdk sync workflow YAML syntax

[ben-fornefeld]

Summary

• fix invalid YAML in sdk-reference-sync workflow
• quote the create-pull-request commit-message and title values
• keep the GitHub App token PR creation flow intact

Testing

• ruby -e 'require "yaml"; YAML.load_file(".github/workflows/sdk-reference-sync.yml")'

---

Note

Low Risk
Low risk workflow-only change that just quotes commit-message and title values to avoid YAML parsing issues; no runtime logic or generated docs behavior changes.

Overview
Fixes invalid YAML in .github/workflows/sdk-reference-sync.yml by quoting the peter-evans/create-pull-request commit-message and title strings that include ${{ ... }} expressions.

This keeps the existing GitHub App token-based PR creation flow unchanged while preventing workflow parsing failures.

^{Written by Cursor Bugbot for commit 4775a45. This will update automatically on new commits. Configure here.}

[matthewlouisbrockman]

quoting oops