docs: add missing --no-trunc in example
@@ -51,7 +51,7 @@ Options:
Running `docker ps --no-trunc` showing 2 linked containers.
```console
-$ docker ps
+$ docker ps --no-trunc
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4c01db0b339c ubuntu:12.04 bash 17 seconds ago Up 16 seconds 3300-3310/tcp webapp
