fix end of line error

Signed-off-by: codeEvolveZenith345 <suntiwari3495@gmail.com>

Author: codeEvolveZenith345

docs/stylesheets/extra.css

@@ -678,4 +678,4 @@ a.md-header__button.md-logo img {
     -webkit-line-clamp: 3;
     -webkit-box-orient: vertical;
     overflow: hidden;
-}
+}