docusaurus: doesn’t use full height

[hanspagel]

References with just a little bit of content aren’t using the full height in Docusaurus.

Configuration

[
  '@scalar/docusaurus',
  {
    id: 'yaml-string',
    label: 'yaml-string',
    route: '/yaml-string',
    configuration: {
      spec: {
        content: `openapi: 3.1.0
info:
title: Hello World
version: 1.0.0
paths: {}
`,
      },
    },
  } as ScalarOptions,
],
],

Screenshot

[cameronrohani]

This should fix that
#2198

[antlio]

issue seems to remain from the pr preview