Fix typo in WritableStream detection, based on #504

NielsLeenheer · NielsLeenheer · commit c8d79dc30e2e · 2017-05-14T12:54:39.000+02:00
diff --git a/scripts/9/engine.js b/scripts/9/engine.js
@@ -3462,7 +3462,7 @@ Test9 = (function () {
         function (results) {
             results.addItem({
                 key: 'streams.writeable',
-                passed: 'WriteableStream' in window
+                passed: 'WritableStream' in window
             });
         },
 
