[#1916] Minor formatting tweaks

Author: weaverryan

cookbook/console/generating_urls.rst

@@ -23,8 +23,7 @@ Configuring the Request Context globally
     The ``host`` and ``scheme`` parameters are available since Symfony 2.1
 
 .. versionadded: 2.2
-
-    The base_url parameter is available since Symfony 2.2
+    The ``base_url`` parameter is available since Symfony 2.2
 
 To configure the Request Context - which is used by the URL Generator - you can
 redefine the parameters it uses as default values to change the default host