Fix missing import in Provider/HOC example

#241

Co-authored-by: Chirag Jain <chirgjn@users.noreply.github.com>

README.md

@@ -392,6 +392,7 @@ import {Plugin} from './plugins/my-plugin.js';
 app.register(Plugin);
 
 // in components/some-component.js
+import {HOC} from '../plugins/my-plugin.js';
 const component = ({console}) => {
   return <button onClick={() => console.log('hello')}>Click me</button>;
 };