docs: Update notifications (renderer) docs (#29267)

* remove version information from html

* change format for readability

* clarify which console the message should appear in

* minor changes to renderer.md

* update UI on click instead of developer console

* remove node-integration and fix md

* update content

* chore: remove ****

Co-authored-by: Ethan Arrowood <ethan.arrowood@gmail.com>
Co-authored-by: Cheng Zhao <github@zcbenz.com>

docs/fiddles/features/notifications/renderer/main.js

@@ -3,10 +3,7 @@ const { app, BrowserWindow } = require('electron')
 function createWindow () {
   const win = new BrowserWindow({
     width: 800,
-    height: 600,
-    webPreferences: {
-      nodeIntegration: true
-    }
+    height: 600
   })
 
   win.loadFile('index.html')