Update on index refernce documentation

Signed-off-by: yuexiao-wang <wang.yuexiao@zte.com.cn>
(cherry picked from commit 0483d776130aa6b7add845bdab3d1d8ee67f7480)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/reference/commandline/index.md

@@ -136,7 +136,7 @@ read the [`dockerd`](dockerd.md) reference page.
 | [service create](service_create.md) | Create a new service                   |
 | [service inspect](service_inspect.md) | Inspect a service                    |
 | [service ls](service_ls.md) | List services in the swarm                     |
-| [service rm](service_rm.md) | Reemove a swervice from the swarm              |
+| [service rm](service_rm.md) | Remove a service from the swarm                |
 | [service scale](service_scale.md) | Set the number of replicas for the desired state of the service |
 | [service ps](service_ps.md) | List the tasks of a service              |
 | [service update](service_update.md)  | Update the attributes of a service    |