Use correct authors param

layouts/_default/single.html

@@ -6,7 +6,7 @@
 		{{ .Content }}
 	</div>
 	<div class="blog-post--footer">
-		<div class="blog-post--author">Author: {{ .Site.Author }}</div>
+		<div class="blog-post--author">Author: {{ .Site.Params.Author }}</div>
 		<div class="blog-post--updated">Updated: {{ .Date }}</div>
 	</div>
 </div>