[TwigBundle] fixed service names

src/Symfony/Framework/TwigBundle/Resources/config/twig.xml

@@ -22,22 +22,22 @@
       <argument>%twig.options%</argument>
     </service>
 
-    <service id="twig_loader" class="%twig.loader.class%">
+    <service id="twig.loader" class="%twig.loader.class%">
       <call method="setEngine">
         <argument type="service" id="templating" />
       </call>
     </service>
 
-    <service id="twig_renderer" class="%twig.renderer.class%">
+    <service id="twig.renderer" class="%twig.renderer.class%">
       <annotation name="templating.renderer" alias="twig" />
       <argument type="service" id="twig" />
     </service>
 
-    <service id="twig_extension_escaper" class="\Twig_Extension_Escaper">
+    <service id="twig.extension.escaper" class="\Twig_Extension_Escaper">
       <annotation name="twig.extension" />
     </service>
 
-    <service id="twig_extension_helpers" class="Symfony\Framework\TwigBundle\Extension\Helpers">
+    <service id="twig.extension.helpers" class="Symfony\Framework\TwigBundle\Extension\Helpers">
       <annotation name="twig.extension" />
     </service>
   </services>