MediaRecorder example not working on Download Audio

[David]

https://github.com/mdn/dom-examples/tree/master/media/web-dictaphone

Example here was not working when click download recorded audio.

My Browser : Chrome 103
OS: Mac OS 12.3.1

I guess the root cause is
https://github.com/mdn/dom-examples/blob/master/media/web-dictaphone/scripts/app.js#L80

it specific type to ogg but in fact it was webm format .

for prove that, i have download the file and rename the extension to webm from ogg manually . It would working perfectly