message: Remove leftover reference to renderReact
diff: @@ -65,9 +65,9 @@ If you are using TypeScript, you can supply the name of the extension point as a
  ```tsx
  import React from 'react';
  -import {renderReact, useExtensionInput, Button} from '@shopify/argo-checkout';
  +import {render, useExtensionInput, Button} from '@shopify/argo-checkout';
  -renderReact('Checkout::PostPurchase::Render', () => <App />);
  +render('Checkout::PostPurchase::Render', () => <App />);
  function App({extensionPoint}) {
  const {extensionPoint} = useExtensionInput<
  @@ -86,4 +86,4 @@ function App({extensionPoint}) {
  }
  ```
  -This hook can only be called if you registered your extension with `renderReact`, as that callback wraps the application in the necessary React context to make the input available anywhere in the tree.
  +This hook can only be called if you registered your extension with `render`, as that callback wraps the application in the necessary React context to make the input available anywhere in the tree.
  