[selectors-api] Typo in Example

[Gavin Kistner]

The Selectors API document, section 8, has this example code:
  var div = document.getElementById("bar");
  var p = bar.querySelector("body p");

I assume that is supposed to be either...
  var div = document.getElementById("bar");
  var p = div.querySelector("body p");
...or...
  var bar = document.getElementById("bar");
  var p = bar.querySelector("body p");