Fixing updateDocument() method : missing a "doc" property wrapper aro…

…und updated fields

src/app/code/community/Smile/ElasticSearch/Model/Resource/Engine/Elasticsearch/Index.php

@@ -638,7 +638,7 @@ public function updateDocument($id, array $data = array(), $type = 'product')
         }
 
         $headerRow = array('update' => $headerData);
-        $dataRow = $data;
+        $dataRow   = array('doc' => $data);
 
         $result = array($headerRow, $dataRow);
         return $result;