Unfortunately I could not make a PR for this, but I found two typos in the wiki: "I only credit cards" -> "I only accept credit cards" [found here](https://github.com/w3c/payment-request-info/wiki/PaymentMethodPractice#capability-matching-beyond-payment-method-identifier-matching) In the code block underneath [Payee identity](https://github.com/w3c/payment-request-info/wiki/PaymentMethodPractice#payee-identity) the leading `[` is missing from the data array.