Use namespaced join function

Author: murilopolese

index.js

@@ -1,7 +1,6 @@
 const { app, BrowserWindow, Menu, ipcMain, dialog } = require('electron')
 const path = require('path')
 const fs = require('fs')
-const join = require('path').join
 const openAboutWindow = require('about-window').default
 
 let win = null // main window
@@ -203,8 +202,8 @@ const template = [
         label:'Info about this app',
         click: () => {
             openAboutWindow({
-                icon_path: join(__dirname, 'ui/arduino/assets/about_image.png'),
-                css_path: join(__dirname, 'ui/arduino/about.css'),
+                icon_path: path.join(__dirname, 'ui/arduino/assets/about_image.png'),
+                css_path: path.join(__dirname, 'ui/arduino/about.css'),
                 copyright: '© Arduino SA 2022',
                 package_json_dir: __dirname,
                 bug_report_url: "https://github.com/arduino/lab-micropython-editor/issues",