add wordcount to read time title, shrink footer text size a bit

web/src/components/post/postInfo.astro

@@ -1,10 +1,10 @@
 ---
 import { getFormattedDate } from '@utils/date'
-const { publishDate, readTime, tags } = Astro.props
+const { publishDate, wordCount, readTime, tags } = Astro.props
 ---
 
 <time datetime={publishDate}>{getFormattedDate(publishDate)}</time> |
-{readTime} min. read |
+<span title={`${wordCount} words`}>{readTime} min. read</span> |
 {
     tags.map((tag, i) => (
     <>