minor #7546 Update configuration.rst (atailouloute)

This PR was submitted for the 3.2 branch but it was merged into the 2.7 branch instead (closes #7546).

Discussion
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Update configuration.rst

Fix default extension namespace

Commits
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f247e84 Update configuration.rst

Author: xabbuh

bundles/configuration.rst

@@ -325,7 +325,7 @@ configuration of a specific bundle. The namespace is returned from the
 :method:`Extension::getNamespace() <Symfony\\Component\\DependencyInjection\\Extension\\Extension::getNamespace>`
 method. By convention, the namespace is a URL (it doesn't have to be a valid
 URL nor does it need to exists). By default, the namespace for a bundle is
-``http://example.org/dic/schema/DI_ALIAS``, where ``DI_ALIAS`` is the DI alias of
+``http://example.org/schema/dic/DI_ALIAS``, where ``DI_ALIAS`` is the DI alias of
 the extension. You might want to change this to a more professional URL::
 
     // src/Acme/HelloBundle/DependencyInjection/AcmeHelloExtension.php