[Bug]: the example in the document of represented file creates BrowserWindow twice

[HQidea]

doc link: https://www.electronjs.org/docs/latest/tutorial/represented-file
code:

electron/docs/fiddles/features/represented-file/main.js

Lines 4 to 18 in d8e7457

	function createWindow () {
	const win = new BrowserWindow({
	width: 800,
	height: 600
	})
	win.loadFile('index.html')
	}
	app.whenReady().then(() => {
	const win = new BrowserWindow()
	win.setRepresentedFilename(os.homedir())
	win.setDocumentEdited(true)
	})

The code in the example creates BrowserWindow both in the createWindow function and after app.whenReady(), which not loads index.html properly.

[electron-issue-triage]

This issue has been automatically marked as stale. If this issue is still affecting you, please leave any comment (for example, "bump"), and we'll keep it open. If you have any new additional information—in particular, if this is still reproducible in the latest version of Electron or in the beta—please include it with your comment!

[HQidea]

May I send a pr to fix this?