Extension Doc Changes (no building or testable changes): minor changes for tab & windows doc

chrome/common/extensions/docs/build/generator.html

Index: chrome/common/extensions/docs/build/generator.html
diff --git a/chrome/common/extensions/docs/build/generator.html b/chrome/common/extensions/docs/build/generator.html
index 7e82e0e72963c6d99a76b21aa7c826cd55589f4b..eedebf8bcab9c02d3af441e2a6a9162e1eeb662d 100755
--- a/chrome/common/extensions/docs/build/generator.html
+++ b/chrome/common/extensions/docs/build/generator.html
@@ -25,10 +25,11 @@ function generate() {
 }
 
 function done() {
+  var preNode = document.createElement('pre');
   var textNode = document.createTextNode(
       childFrame.contentWindow.serializePage());
-  document.getElementsByTagName("body")[0].appendChild(textNode);
-  
+  preNode.appendChild(textNode);
+  document.getElementsByTagName("body")[0].appendChild(preNode);
   layoutTestController.notifyDone();
 }
     </script>