Fix markdown syntax error for Quick Start title

bclozel · bclozel · commit c97fd67193ff · 2016-04-26T12:18:48.000+02:00
diff --git a/index.html b/index.html
@@ -63,6 +63,7 @@
 * JDK 5+ for Spring Framework 3.x
 
 <span id="quick-start"></span>
+
 ## Quick Start
 
 {% include download_widget.md %}
