Added more components to MDX render

packages/website/md/new-docs/usage.mdx

@@ -97,4 +97,14 @@ open coverage/index.html
 -   Actual numbers don't matter, just that it's a number
 -   And another item.
 
+### Tabs
+
+### Separator
+
+---
+
+And some content
+
+---
+
 Use [Ganache](https://github.com/trufflesuite/ganache-cli) as a backing node.

packages/website/ts/pages/docs/view.tsx

@@ -61,7 +61,12 @@ export class DocsView extends React.Component<Props, State> {
             ul: UnorderedList,
             code: Code,
             table: Table,
+            hr: Separator,
             Callout,
+            Tabs,
+            TabList,
+            Tab,
+            TabPanel,
         },
     };
     public componentDidMount(): void {