TwigComponent: remove floating text

Author: alexislefebvre

src/TwigComponent/doc/index.rst

@@ -41,8 +41,6 @@ Enjoy your new component!
 .. image:: images/alert-example.png
     :alt: Example of the Alert Component
 
-    Example of the Alert Component
-
 This brings the familiar "component" system from client-side frameworks
 into Symfony. Combine this with `Live Components`_, to create
 an interactive frontend with automatic, Ajax-powered rendering.