docs: fix intermediate file list for v9

docs/advanced.rst

@@ -322,15 +322,23 @@ working files on a per page basis have the page number as a prefix
 (starting with page 1), an infix indicates the processing stage, and a
 suffix indicates the file type. Some important files include:
 
--  ``.page.png`` - what the input page looks like
--  ``.image`` - the image we will show the user if we are in a mode that
-   changes the final appearance; may be in one of several image formats
--  ``.text.pdf`` - the OCR file; this will load as a blank page but
-   should have visible text if checked with a tool like pdftotext or
-   pdfminder.six
--  ``.ocr.png`` - the file that is sent to Tesseract for OCR; depending
+-  ``_rasterize.png`` - what the input page looks like
+-  ``_ocr.png`` - the file that is sent to Tesseract for OCR; depending
    on arguments this may differ from the presentation image
--  ``layers.rendered.pdf`` - the composite PDF, before metadata repair
-   and optimization
+-  ``_pp_deskew.png`` - the image, after deskewing
+-  ``_pp_clean.png`` - the image, after cleaning with unpaper
+-  ``_ocr_tess.pdf`` - the OCR file; appears as a blank page with invisible
+   text embedded
+-  ``_ocr_tess.txt`` - the OCR text (not necessarily all text on the page,
+   if the page is mixed format)
+-  ``fix_docinfo.pdf`` - a temporary file created to fix the PDF DocumentInfo
+   data structure
+-  ``graft_layers.pdf`` - the rendered PDF with OCR layers grafted on
+-  ``pdfa.pdf`` - ``graft_layers.pdf`` after conversion to PDF/A
+-  ``pdfa.ps`` - a PostScript file used by Ghostscript for PDF/A conversion
+-  ``optimize.pdf`` - the PDF generated before optimization
+-  ``optimize.out.pdf`` - the PDF generated by optimization
+-  ``origin`` - the input file
+-  ``origin.pdf`` - the input file or the input image converted to PDF
 -  ``images/*`` - images extracted during the optimization process; here
    the prefix indicates a PDF object ID not a page number