message: [now-static-build] Add defaultRoutes for docusaurus v2
  Add a default router for Docusaurus v2 to add strong asset caching and 404 page fallback.
diff: @@ -95,6 +95,21 @@ const frameworkList: Framework[] = [
  return base;
  },
  + defaultRoutes: [
  + {
  + src: '^/[^./]+\\.[0-9a-f]{8}\\.(css|js)',
  + headers: { 'cache-control': 'max-age=31536000, immutable' },
  + continue: true,
  + },
  + {
  + handle: 'filesystem',
  + },
  + {
  + src: '.*',
  + status: 404,
  + dest: '404.html',
  + },
  + ],
  },
  {
  name: 'Preact',
  