Dictionary key/value typo

IPython/html/static/base/js/utils.js

@@ -639,7 +639,7 define([
         var keys = Object.keys(d);
         var values = [];
         keys.forEach(function(key) {
-            values.push(key);
+            values.push(d[key]);
         });
         return Promise.all(values).then(function(v) {
             d = {};