docs: fix output of node inspect

The output uses tabs, but those don't
translate well to the rendered output in
the docs, so replacing the tabs with spaces.

Also updates the output, because REPLICATED,
and SPREAD are no longer all-caps in the
actual output.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/swarm/swarm-tutorial/rolling-update.md

@@ -46,17 +46,20 @@ every 10 seconds:
     ```bash
     $ docker service inspect redis --pretty
 
-    ID:		0u6a4s31ybk7yw2wyvtikmu50
-    Name:		redis
-    Mode:		REPLICATED
-     Replicas:		3
+    ID:             0u6a4s31ybk7yw2wyvtikmu50
+    Name:           redis
+    Mode:           Replicated
+     Replicas:      3
     Placement:
-     Strategy:	SPREAD
+     Strategy:      Spread
     UpdateConfig:
-     Parallelism:	1
-     Delay:		10s
+     Parallelism:   1
+     Delay:         10s
     ContainerSpec:
-     Image:		redis:3.0.6
+     Image:         redis:3.0.6
+    Resources:
+    Reservations:
+    Limits:
     ```
 
 4. Now you can update the container image for `redis`. The swarm  manager
@@ -71,19 +74,22 @@ applies the update to nodes according to the `UpdateConfig` policy:
 desired state:
 
     ```bash
-    docker service inspect --pretty redis
+    $ docker service inspect --pretty redis
 
-    ID:		0u6a4s31ybk7yw2wyvtikmu50
-    Name:		redis
-    Mode:		REPLICATED
-     Replicas:		3
+    ID:             0u6a4s31ybk7yw2wyvtikmu50
+    Name:           redis
+    Mode:           Replicated
+     Replicas:      3
     Placement:
-     Strategy:	SPREAD
+     Strategy:      Spread
     UpdateConfig:
-     Parallelism:	1
-     Delay:		10s
+     Parallelism:   1
+     Delay:         10s
     ContainerSpec:
-     Image:		redis:3.0.7
+     Image:         redis:3.0.7
+    Resources:
+    Reservations:
+    Limits:
    ```
 
 6. Run `docker service tasks <TASK-ID>` to watch the rolling update: