merged branch richardmiller/fixing_config_docblock (PR #5542)

Commits
-------

1402b42 Fixing config normalisation example in docblock

Discussion
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Fixing config normalisation example in docblock

Against 2.0 this time

as per @stof's comments in symfony/symfony-docs#1721

Bug fix: no
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: -
Fixes the following tickets: -
Todo: -
License of the code: MIT

src/Symfony/Component/Config/Definition/Processor.php

@@ -89,14 +89,14 @@ class Processor
      *
      * Here is an example.
      *
-     * The configuration is XML:
+     * The configuration in XML:
      *
-     * <twig:extension id="twig.extension.foo" />
-     * <twig:extension id="twig.extension.bar" />
+     * <twig:extension>twig.extension.foo</twig:extension>
+     * <twig:extension>twig.extension.bar</twig:extension>
      *
      * And the same configuration in YAML:
      *
-     * twig.extensions: ['twig.extension.foo', 'twig.extension.bar']
+     * extensions: ['twig.extension.foo', 'twig.extension.bar']
      *
      * @param array  $config A config array
      * @param string $key    The key to normalize