clean up

Author: yanchuan

functions/pdf_extractor/pdf_extractor.py

@@ -179,6 +179,7 @@ def image_to_text(doc_path, event, context):
  '.pdf': pdf_to_text,
  '.png': image_to_text,
  '.tiff': image_to_text,
+ '.tif': image_to_text,
  '.jpg': image_to_text,
  '.jpeg': image_to_text,
 }