Fix acrolynx spelling error.

Author: TimShererWithAquent

articles/container-service/dcos-swarm/container-service-swarm-mode-walkthrough.md

@@ -48,7 +48,7 @@ Output:
 
 ## Create Docker Swarm cluster
 
-Create a Docker CE cluster in Azure Container Service with the [az acs create](/cli/azure/acs#az-acs-create) command. For information on region availaiblity of Docker CE, see [ACS regions for Docker CE](https://github.com/Azure/ACS/blob/master/announcements/2017-08-04_additional_regions.md)
+Create a Docker CE cluster in Azure Container Service with the [az acs create](/cli/azure/acs#az-acs-create) command. For information on region availability of Docker CE, see [ACS regions for Docker CE](https://github.com/Azure/ACS/blob/master/announcements/2017-08-04_additional_regions.md)
 
 The following example creates a cluster named *mySwarmCluster* with one Linux master node and three Linux agent nodes.