Printed copies of Writer Guide 6.4

I've finally succeeded in publishing the print edition of the Writer
Guide 6.4. It's available here:
https://www.lulu.com/en/us/shop/libreoffice-documentation-team/libreoffice-writer-guide-64/paperback/product-5jdeme.html

Olivier, please note this on the website. I have added the link to the
wiki page.

-Jean