minor symfony#8998 [Translation] Fix typo in How to Work with the User's Locale (Tykzz)

This PR was merged into the 4.0 branch.

Discussion
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[Translation] Fix typo in How to Work with the User's Locale

Commits
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d5ee90e Fix typo

Author: javiereguiluz

translation/locale.rst

@@ -69,7 +69,7 @@ by the routing system using the special ``_locale`` parameter:
         # config/routes.yaml
         contact:
             path:       /{_locale}/contact
-            controller: App\Controller\ContactContorller::index
+            controller: App\Controller\ContactController::index
             requirements:
                 _locale: en|fr|de