minor #8113 Fix typo er(r)or (tobemedia)

This PR was merged into the 3.3 branch.

Discussion
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Fix typo er(r)or

Fix typo in word "error" at the Accessing the Container Directly block

Commits
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658637f Fix typo er(r)or

Author: xabbuh

controller.rst

@@ -372,7 +372,7 @@ method. Here are several common services you might need::
     // you can also fetch parameters
     $someParameter = $this->getParameter('some_parameter');
 
-If you receive an eror like:
+If you receive an error like:
 
 .. code-block:: text