ResponseFormat wrongfully serialized

[LucasEDT]

Describe the bug
On AudioCreateSpeechRequest.cs line 31

while on the api we have

It will silently give you an MP3 file back instead of any other type you request. Which super sucks..

Changing to this fix the issue:

I was going to open a PR but I don't have permission :-)

Please fix it soon! thanks!

[kayhantolga]

Thank you for reporting. A fix is ready for the next version, and there are no special permission restrictions. You should be able to create a pull request (PR).