feat(dev): Added react docs for Pattern + refactor

This adds support for not only documenating components, but also
constants and functions that may be exported next to components.

sites/dev/docs/reference/packages/react/components/null/readme.mdx

@@ -2,7 +2,6 @@
 title: 'Null'
 ---
 
-
 import { DocusaurusDoc } from '@freesewing/react/components/Docusaurus'
 import { ComponentDocs } from '@site/src/components/component-docs.js'
 import * as jsdoc from '@site/prebuild/jsdoc/components.null.mjs'
@@ -10,12 +9,16 @@ import { Null } from '@freesewing/react/components/Null'
 
 <DocusaurusDoc>
 
-The __Null__ component family provides the following components:
+- [Components](#components)
+
+## Components
+
+The **Null** component family provides the following components:
 
 - [Null](#null)
 
-## Null
+### Null
+
 <ComponentDocs docs={jsdoc.jsdocNull} example={Null} />
 
 </DocusaurusDoc>
-