minor #4302 View documentation had a reference to the wrong twig template (milan)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #4302).

Discussion
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View documentation had a reference to the wrong twig template

Just noticed this little discrepancy in the docs.

Commits
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d420491 Changed to reference the correct twig template

Author: weaverryan

quick_tour/the_view.rst

@@ -157,7 +157,7 @@ First, create an ``embedded.html.twig`` template:
     {# src/Acme/DemoBundle/Resources/views/Demo/embedded.html.twig #}
     Hello {{ name }}
 
-And change the ``index.html.twig`` template to include it:
+And change the ``hello.html.twig`` template to include it:
 
 .. code-block:: jinja