docs: Added letter section to add home page in basic setup doc

src/pages/docs/how-to/basic-setup/index.mdx

@@ -208,7 +208,26 @@ This catch-all route tells Next.js to use the templates to render pages.
 
 Note that it is still possible to override this with hardcoded pages. For example, if you have a page in your WordPress site with a URI of `/about`, Faust.js will render that page using the relevant template in your project's `wp-templates` folder. However, if you add a `src/pages/about.js` file to your project, Next.js will render the `/about` path in your app using that file instead.
 
-### D. Test your template
+### D. Update the "Home" Page
+
+Ensure you have a `/src/pages/index.js` file in order for the catch-all to work properly.
+
+This could either be a hard-coded page or a faust page, such as:
+
+```js title="src/pages/index.js"
+import { getWordPressProps, WordPressTemplate } from "@faustwp/core"
+
+export default function Page(props: any) {
+  return <WordPressTemplate {...props} />
+}
+
+export function getStaticProps(ctx: any) {
+  return getWordPressProps({ ctx })
+}
+```
+Having this index will allow you to have WordPress + Faust on your home page.
+
+### E. Test your template
 
 You should now be able to make use of this template.