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/heading/readme.mdx

@@ -12,17 +12,14 @@ import {
   jsdocH5,
   jsdocH6,
 } from '@site/prebuild/jsdoc/components.heading.mjs'
-import {
-  H1Example,
-  H2Example,
-  H3Example,
-  H4Example,
-  H5Example,
-  H6Example,
-} from './_examples.js'
+import { H1Example, H2Example, H3Example, H4Example, H5Example, H6Example } from './_examples.js'
 
 <DocusaurusDoc>
 
+- [Components](#components)
+
+## Components
+
 The **Button** component family provides the following components:
 
 - [H1](#h1)
@@ -32,23 +29,28 @@ The **Button** component family provides the following components:
 - [H5](#h5)
 - [H6](#h6)
 
-## H1
+### H1
+
 <ComponentDocs docs={jsdocH1} example={H1Example} />
 
-## H2
+### H2
+
 <ComponentDocs docs={jsdocH2} example={H2Example} />
 
-## H3
+### H3
+
 <ComponentDocs docs={jsdocH3} example={H3Example} />
 
-## H4
+### H4
+
 <ComponentDocs docs={jsdocH4} example={H4Example} />
 
-## H5
+### H5
+
 <ComponentDocs docs={jsdocH5} example={H5Example} />
 
-## H6
+### H6
+
 <ComponentDocs docs={jsdocH6} example={H6Example} />
 
-
 </DocusaurusDoc>