Finaly touches on translation locale setting note

Author: solazs

book/translation.rst

@@ -429,7 +429,7 @@ via the ``request`` object::
 
     Setting the locale using the ``$request->setLocale()`` method won't affect 
     rendering in the same action. The translator locale is set during the
-    kernel.request event. Either set the locale before the listener is called
+    ``kernel.request`` event. Either set the locale before the listener is called
     (e.g. in a custom listener) or use the ``setLocale()`` method of the 
     ``translator`` service.