update

pybossa/exporter/export_helpers.py

@@ -223,7 +223,7 @@ def filter_task_info_headers(headers, accepted_task_info_fields=[]):
   task_info_header_len = len(task_info_header) + 2
 
   for header in headers:
-    # skip task__info_header
+    # skip task info_header
     if header != task_info_header:
       if header.startswith(task_info_header):
         masked_header = header[task_info_header_len:]