Fix a typo - duplicated h5.

static/css/elegant.css

@@ -214,7 +214,7 @@ h2,
 h3,
 h4,
 h5,
-h5 {
+h6 {
     font-family: Baskerville, Garamond, Georgia, 'DejaVu Serif', 'Times New Roman', Times, Serif;
     font-weight: normal;
 }