docs: applies wording suggested in #2154

Signed-off-by: actualben <actualben@users.noreply.github.com>

docs/aci-container-features.md

@@ -6,7 +6,7 @@ keywords: Docker, Azure, Integration, ACI, container, cli, deploy, cloud
 # Azure Container Instances: running single containers
 
 Single containers can be executed on ACI with the `docker run` command.
-A single container is executed in its own ACI container group, that will container only one container.
+A single container is executed in its own ACI container group, which will contain a single container.
 
 Containers can be listed with the `docker ps` command, and stopped and removed with `docker stop <CONTAINER>` and `docker rm <CONTAINER>`.