docs: change code blocks from "shell" to "console"

Change-Id: I136fccfc06e07fb68d11df686c59687362fb8827
Signed-off-by: John DeNisco <jdenisco@cisco.com>
diff --git a/docs/usecases/containerSetup.rst b/docs/usecases/containerSetup.rst
index e0fd81e..d1c230d 100644
--- a/docs/usecases/containerSetup.rst
+++ b/docs/usecases/containerSetup.rst
@@ -9,14 +9,14 @@
 
 To enter our container via the shell, type:
 
-.. code-block:: console
+.. code-block:: shell
     
     # lxc-attach -n cone
     root@cone:/#
 
 Run the linux DHCP setup and install VPP: 
 
-.. code-block:: console
+.. code-block:: shell
     
     root@cone:/# resolvconf -d eth0
     root@cone:/# dhclient
@@ -28,13 +28,13 @@
 
 After this is done, start VPP in this container:
 
-.. code-block:: console
+.. code-block:: shell
     
     root@cone:/# service vpp start
 
 Exit this container with the **exit** command (you *may* need to run **exit** twice):
 
-.. code-block:: console
+.. code-block:: shell
 
     root@cone:/# exit
     exit