adding dataset loading script

SciDuet.py

@@ -156,7 +156,7 @@ class SciDuet(datasets.GeneratorBasedBuilder):
                     "paper_title": paper_title,
                     "paper_abstract": paper_abstract,
                     "paper_content": {"paper_content_id":paper_content_ids, "paper_content_text":paper_content_texts},
-                    "paper_header": {"paper_header_number": paper_header_numbers, "paper_header_content": paper_header_contents},
+                    "paper_headers": {"paper_header_number": paper_header_numbers, "paper_header_content": paper_header_contents},
 
                     "slide_title": slide_title,
                     "slide_content_text": slide_content_text,