Remove the legacy document format to move to docling v2 output

Signed-off-by: Aakanksha Duggal <[email protected]>

src/instructlab/sdg/utils/chunkers.py

@@ -522,11 +522,11 @@ def export_documents(self, converted_docs: Iterable[ConversionResult]):
 
                 # Export Deep Search document JSON format:
                 with (docling_artifacts_path / f"{doc_filename}.json").open("w") as fp:
-                    fp.write(json.dumps(doc.legacy_document.export_to_dict()))
+                    fp.write(json.dumps(doc.export_to_dict()))
 
                 # Export Markdown format:
                 with (docling_artifacts_path / f"{doc_filename}.md").open("w") as fp:
-                    fp.write(doc.legacy_document.export_to_markdown())
+                    fp.write(doc.export_to_markdown())
             else:
                 logger.info(f"Document {doc.input.file} failed to convert.")
                 failure_count += 1