fix the referenced documents names

Author: xabbuh

cookbook/bundles/extension.rst

@@ -92,7 +92,7 @@ The second method has several specific advantages:
 .. seealso::
 
     For parameter handling within a Dependency Injection class see
-    :doc:`</cookbook/configuration/using_parameters_in_dic>`.
+    :doc:`/cookbook/configuration/using_parameters_in_dic`.
 
 .. index::
    single: Bundle; Extension

cookbook/routing/service_container_parameters.rst

@@ -128,4 +128,4 @@ path):
 .. seealso::
 
     For parameter handling within a Dependency Injection class see
-    :doc:`</cookbook/configuration/using_parameters_in_dic>`.
+    :doc:`/cookbook/configuration/using_parameters_in_dic`.