minor #8968 Improved the routing debug article (javiereguiluz)

This PR was merged into the 2.7 branch.

Discussion
----------

Improved the routing debug article

Minor changes, but hopefully they'll be useful.

Commits
-------

de8db42 Improved the routing debug article

Author: weaverryan

routing/debug.rst

@@ -6,21 +6,13 @@ How to Visualize And Debug Routes
 
 While adding and customizing routes, it's helpful to be able to visualize
 and get detailed information about your routes. A great way to see every
-route in your application is via the ``debug:router`` console command. Execute
-the command by running the following from the root of your project.
+route in your application is via the ``debug:router`` console command, which
+lists *all* the configured routes in your application:
 
 .. code-block:: terminal
 
     $ php app/console debug:router
 
-.. versionadded:: 2.6
-    Prior to Symfony 2.6, this command was called ``router:debug``.
-
-This command will print a helpful list of *all* the configured routes in
-your application:
-
-.. code-block:: text
-
     homepage              ANY       /
     contact               GET       /contact
     contact_process       POST      /contact
@@ -29,21 +21,18 @@ your application:
     blog_show             ANY       /blog/{slug}
 
 You can also get very specific information on a single route by including
-the route name after the command:
+the route name as the command argument:
 
 .. code-block:: terminal
 
     $ php app/console debug:router article_show
 
-Likewise, if you want to test whether a URL matches a given route, you can
-use the ``router:match`` console command:
+Likewise, if you want to test whether a URL matches a given route, use the
+``router:match`` command. This is useful to debug routing issues and find out
+which route is associated with the given URL:
 
 .. code-block:: terminal
 
     $ php app/console router:match /blog/my-latest-post
 
-This command will print which route the URL matches.
-
-.. code-block:: text
-
     Route "blog_show" matches