minor symfony#7001 Several typo fixes (emirb)

This PR was merged into the 3.1 branch.

Discussion
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Several typo fixes

Commits
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e45779a Several typo fixes

Author: xabbuh

controller/argument_value_resolver.rst

@@ -172,7 +172,7 @@ and adding a priority.
         // app/config/services.php
         use Symfony\Component\DependencyInjection\Definition;
 
-        $defintion = new Definition(
+        $definition = new Definition(
             'AppBundle\ArgumentResolver\UserValueResolver',
             array(new Reference('security.token_storage'))
         );