Update word count in metadata

src/epub/content.opf

@@ -52,7 +52,7 @@
 		<dc:source>https://catalog.hathitrust.org/Record/100763166</dc:source>
 		<meta property="se:production-notes">WARNING: Typogrify messes up the curling of single quotes in dialect after a dash. There are very many such instances.</meta>
 		<meta property="se:word-count">89527</meta>
-		<meta property="se:reading-ease.flesch">70.23</meta>
+		<meta property="se:reading-ease.flesch">70.33</meta>
 		<meta property="se:url.encyclopedia.wikipedia">https://en.wikipedia.org/wiki/The_Mystery_of_a_Hansom_Cab</meta>
 		<meta property="se:url.vcs.github">https://github.com/standardebooks/fergus-hume_the-mystery-of-a-hansom-cab</meta>
 		<dc:creator id="author">Fergus Hume</dc:creator>