docs(containers): add --name to redis container in restart example

Fixes a bug where a subsequent `docker update` command fails because the
container was originally run with a random generated name instead of 'redis'.

Author: RScrafted

content/manuals/engine/containers/start-containers-automatically.md

@@ -37,7 +37,7 @@ The following command starts a Redis container and configures it to always
 restart, unless the container is explicitly stopped, or the daemon restarts.
 
 ```console
-$ docker run -d --restart unless-stopped redis
+$ docker run -d --name redis --restart unless-stopped redis
 ```
 
 The following command changes the restart policy for an already running