[skip ci] Added url, original_url and archive_date to the cite_book shortcode

layouts/shortcodes/cite_book.html

@@ -28,9 +28,12 @@ A template for citing books inspired by the "cite book" template of Wikipedia.
   "pages" (.Get "pages")
   "title" (.Get "title")
   "edition" (.Get "edition")
+  "url" (.Get "url")
   "date" (.Get "date")
   "publisher" (.Get "publisher")
   "isbn" (.Get "isbn")
   "author" (.Get "author")
   "author2" (.Get "author2")
+  "original_url" (.Get "original_url")
+  "archive_date" (.Get "archive_date")
 ) }}