fix: bump docusaurus and error on all broken links

closes ory/kratos#811

Author: zepatrik

docusaurus.config.js

@@ -61,6 +61,8 @@ module.exports = {
   url: `https://www.ory.sh/`,
   baseUrl: `/${config.projectSlug}/docs/`,
   favicon: 'img/favico.png',
+  onBrokenLinks: 'error',
+  onBrokenMarkdownLinks: 'error',
   organizationName: 'ory', // Usually your GitHub org/user name.
   projectName: config.projectSlug, // Usually your repo name.
   themeConfig: {