Fix formatting

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | 2.3
| Fixed tickets |

Author: ifdattic

components/translation/usage.rst

@@ -217,7 +217,7 @@ recommended format. These files are parsed by one of the loader classes.
                 'symfony.is.great'    => 'Symfony is great',
                 'symfony.is.amazing'  => 'Symfony is amazing',
                 'symfony.has.bundles' => 'Symfony has bundles',
-                'user.login'           => 'Login',
+                'user.login'          => 'Login',
             );
 
 .. _component-translation-pluralization: