[react] feat: Added docs for components/Markdown

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

@@ -2,6 +2,22 @@
 title: Markdown
 ---
 
-:::note
-This page is yet to be created
+import { DocusaurusDoc } from '@freesewing/react/components/Docusaurus'
+
+<DocusaurusDoc>
+
+The **Markdown** component family provides the following components:
+
+- [Markdown](#markdown): A re-export of [react-markdown][rm]
+
+:::tip
+#### Not FreeSewing code
+This component family only contains re-exports of code by other maintainers.\
+Since they are a dependency, we provide them as part of the <code>@freesewing/react</code> package for convenience.
+
+Please refer to the documentation for [react-markdown][rm].
 :::
+
+</DocusaurusDoc>
+
+[rm]: https://github.com/remarkjs/react-markdown