"create story" payload invalid w/r/t external_tickets

[etipton]

@singingwolfboy first of all, thanks for making this!

My issue: I tried it out and was getting a 400 error from the Clubhouse API. I took a look at the payload, and I think it's related to sending "external_tickets" rather than "external_links" -- maybe they changed their v3 API? https://clubhouse.io/api/rest/v3/#Stories

I forked this repo, made these changes, and it worked (without external links of course).

Just letting you know, thx for reading

[etipton]

The fix / workaround has been merged (see #23)