[Docs] Usage record summaries method typo

[svarlamov]

In the docs here there is a typo that causes the call to fail.

var stripe = require("stripe")("~~~");

stripe.usageRecordSummarys.list(
  { limit: 3 },
  function(err, usageRecordSummarys) {
    // asynchronously called
  }
);

Should be replaced with:

var stripe = require("stripe")("~~~");

stripe.usageRecordSummaries.list(
  { limit: 3 },
  function(err, usageRecordSummaries) {
    // asynchronously called
  }
);

EDIT: There's also no example of how the subscription item ID should be passed...

[remi-stripe]

@svarlamov Thanks for the report, I'll work with the docs team internally to get this fixed. The code should look like this:

stripe.usageRecordSummaries.list(
  'si_123',
  { limit: 3 },
  function(err, usageRecordSummaries) {
    // asynchronously called
  }
);