Add the actual command in this example.

Signed-off-by: Jeff Anderson <jeff@docker.com>
Upstream-commit: d8d38f234563a3be0b23cc94df3a9453eacfdee8
Component: engine

components/engine/docs/userguide/networkingcontainers.md

@@ -92,6 +92,7 @@ The network named `bridge` is a special network. Unless you tell it otherwise, D
 Inspecting the network is an easy way to find out the container's IP address.
 
 ```bash
+$ docker network inspect bridge
 [
     {
         "Name": "bridge",