Update Intl.DateTimeFormat calendars to match supported list

[justingrant]

Summary

This PR corrects the list of supported calendars to match the actual supported calendar list, which is here:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/calendar

Not sure why DateTimeFormat's docs have an incorrect list, but the list in the Locale docs (linked above) is correct.

Note that in addition to being incomplete, the current content also has a typo: there's no ethiopia calendar. The correct name is ethioaa, with two a's and no p. This PR fixes this typo too.

Motivation

The current list of calendars is inaccurate and inconsistent with other MDN docs.

Supporting details

Here's a repro showing that the list of calendars in this PR is actually supported in the latest versions of Firefox, Chrome, and Safari:

calendars = [
  "buddhist", 
  "chinese", 
  "coptic", 
  "dangi", 
  "ethioaa", 
  "ethiopic", 
  "gregory", 
  "hebrew", 
  "indian", 
  "islamic", 
  "islamic-umalqura", 
  "islamic-tbla", 
  "islamic-civil", 
  "islamic-rgsa", 
  "iso8601", 
  "japanese", 
  "persian", 
  "roc", 
  "islamicc"
];
// using `calendar` option
calendars.forEach(calendar => console.log(`${calendar} option: ${new Intl.DateTimeFormat('en-US', { calendar }).format(new Date())}`));
// using calendar inside locale
calendars.forEach(calendar => console.log(`${calendar} in locale: ${new Intl.DateTimeFormat(`en-US-u-ca-${calendar}`).format(new Date())}`));

Related issues

mdn/translated-content#4012 (similar typo in French localized docs for Date.prototype.toLocaleString / Date.prototype.toLocaleDateString)

Metadata

• Adds a new document
• Rewrites (or significantly expands) a document
• Fixes a typo, bug, or other error

[teoli2003]

Good catch!

[teoli2003]

Thanks a lot!

Looks good to me.

Congratulations upon your first merged commit here! Welcome aboard! 🎉

[github-actions]

Preview URLs

• https://pr12764.content.dev.mdn.mozit.cloud/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat

Flaws

None! 🎉

External URLs

URL: /en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat
Title: Intl.DateTimeFormat() constructor
on GitHub

No new external URLs