minor symfony#27922 [DependencyInjection] fix typo in ContainerBuilder docblock (xabbuh)

This PR was merged into the 2.8 branch.

Discussion
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[DependencyInjection] fix typo in ContainerBuilder docblock

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
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559cdb0 fix typo in ContainerBuilder docblock

Author: fabpot

src/Symfony/Component/DependencyInjection/ContainerBuilder.php

@@ -493,10 +493,10 @@ public function get($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_INV
      * the parameters passed to the container constructor to have precedence
      * over the loaded ones.
      *
-     * $container = new ContainerBuilder(array('foo' => 'bar'));
+     * $container = new ContainerBuilder(new ParameterBag(array('foo' => 'bar')));
      * $loader = new LoaderXXX($container);
      * $loader->load('resource_name');
-     * $container->register('foo', new stdClass());
+     * $container->register('foo', 'stdClass');
      *
      * In the above example, even if the loaded resource defines a foo
      * parameter, the value will still be 'bar' as defined in the ContainerBuilder