website/docs: Apple Business Manager Integration. (#13319)

website/docs: Flesh out Apple Business Manager integration.

- Fix missing required attribute.
- Adjust visible headers in table of contents.
- Fix Docusaurus warning for nested paragraphs.

website/docusaurus.config.ts

@@ -71,7 +71,8 @@ const createConfig = (): Config => {
                 copyright: `Copyright © ${new Date().getFullYear()} Authentik Security Inc. Built with Docusaurus.`,
             },
             tableOfContents: {
-                maxHeadingLevel: 5,
+                minHeadingLevel: 2,
+                maxHeadingLevel: 3,
             },
             colorMode: {
                 respectPrefersColorScheme: true,
@@ -107,6 +108,7 @@ const createConfig = (): Config => {
                         editUrl:
                             "https://github.com/goauthentik/authentik/edit/main/website/",
                         docItemComponent: "@theme/ApiItem",
+
                         beforeDefaultRemarkPlugins: [
                             remarkDirective,
                             remarkVersionDirective,