docs: document React entry point in main.jsx

Added English comments explaining the React.StrictMode wrapper and the root rendering process using the new React 18 createRoot API.

Author: MarcosSoftwareEngineering

src/main.jsx

@@ -3,7 +3,11 @@ import ReactDOM from 'react-dom/client'
 import App from './App.jsx'
 import './index.css'
 
+// Initialize the root element and render the application
 ReactDOM.createRoot(document.getElementById('root')).render(
+  /* StrictMode is a tool for highlighting potential problems in an application. 
+     It activates additional checks and warnings for its descendants.
+  */
   <React.StrictMode>
     <App />
   </React.StrictMode>,