minor #7561 Update bundles/configuration.rst (Ahmed TAILOULOUTE)

This PR was submitted for the master branch but it was merged into the 2.7 branch instead (closes #7561).

Discussion
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Update bundles/configuration.rst

Fix wrong namespace on the bundle configurations documentation

Commits
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33a8f8f Update bundles/configuration.rst

Author: xabbuh

bundles/configuration.rst

@@ -83,7 +83,7 @@ bundle configuration would look like:
         <?xml version="1.0" ?>
 
         <container xmlns="http://symfony.com/schema/dic/services"
-            xmlns:acme-social="http://example.org/dic/schema/acme_social"
+            xmlns:acme-social="http://example.org/schema/dic/acme_social"
             xsi:schemaLocation="http://symfony.com/schema/dic/services
                 http://symfony.com/schema/dic/services/services-1.0.xsd">