minor #3635 [QuickTour] close opened literals (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
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[QuickTour] close opened literals

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets |

Commits
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ae95ea1 close opened literals

quick_tour/the_controller.rst

@@ -109,7 +109,7 @@ Getting information from the Request
 ------------------------------------
 
 Symfony automatically injects the ``Request`` object when the controller has an
-argument that's type hinted with ``Symfony\Component\HttpFoundation\Request`::
+argument that's type hinted with ``Symfony\Component\HttpFoundation\Request``::
 
     use Symfony\Component\HttpFoundation\Request;