Change the link name for ebook download to be the book format (instead of download). Proposed by At Libitum. fix #119

book.php

@@ -427,7 +427,7 @@ class Book extends Base {
         {
             if ($data->isKnownType ())
             {
-                array_push ($linkArray, $data->getDataLink (Link::OPDS_ACQUISITION_TYPE, "Download"));
+                array_push ($linkArray, $data->getDataLink (Link::OPDS_ACQUISITION_TYPE, $data->format));
             }
         }