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/customize/blueprints/v1/example.md

@@ -4,6 +4,7 @@ title: Example
 
 This is one of the default packaged blueprints to create the default authentication flow.
 
+<!-- prettier-ignore-start -->
 ```yaml
 version: 1
 metadata:
@@ -64,3 +65,4 @@ entries:
           target: !KeyOf flow
       model: authentik_flows.flowstagebinding
 ```
+<!-- prettier-ignore-end -->