website/docs: Update Docusaurus config. Prep for version picker. (#14401)

* website/docs: Clean up config. Add types.

* website/docs: Format MDX.

* website: Fix build warnings. Lint badges frontmatter.

website/docs/sys-mgmt/ops/geoip.mdx

@@ -14,8 +14,8 @@ By default, the GeoIP database is loaded from `/geoip/GeoLite2-City.mmdb`. If mo
 
 If you want to disable GeoIP, you can set the path to a non-existent path and authentik will skip the GeoIP.
 
-import Tabs from "@theme/Tabs";
 import TabItem from "@theme/TabItem";
+import Tabs from "@theme/Tabs";
 
 <Tabs
   defaultValue="docker-compose"

website/docs/sys-mgmt/service-accounts.md

@@ -3,8 +3,6 @@ title: Service Accounts
 sidebar_label: Service Accounts
 ---
 
-# Service Accounts
-
 Service accounts are specialized user accounts designed for machine-to-machine authentication and automation purposes rather than interactive human use. They're ideal for integrating authentik with external systems, APIs, and services.
 
 ## Types of Service Accounts