[w3c/browser-payment-api] editorial: clarify examples (#329)

* Add titles to the example, so it's easier to understand what they show
* Use async/await where possible for clarity
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/browser-payment-api/pull/329

-- Commit Summary --

  * editorial: clarify examples

-- File Changes --

    M index.html (56)

-- Patch Links --

https://github.com/w3c/browser-payment-api/pull/329.patch
https://github.com/w3c/browser-payment-api/pull/329.diff

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/browser-payment-api/pull/329