Docs: Updated Container Registry Server example (#500)

Azure Container Registry Login Server is usually the registry name combined with `azurecr.io`.

docs/reference/schema.md

@@ -67,7 +67,7 @@ Allows storing the name of the container registry in configuration. This is used
 - Determining how to tag the images
 - Determining where to push the images
 
-The registry could be a DockerHub username (`exampleuser`) or the hostname of a container registry (`example.azureci.io`).
+The registry could be a DockerHub username (`exampleuser`) or the hostname of a container registry (`example.azurecr.io`).
 
 If this is not specified in configuration, interactive deployments will prompt for it.
 
@@ -501,4 +501,4 @@ The path `/mypath` or `/mypath/` will match:
 
 #### `host` (`string`)
 
-The host to match. 
+The host to match.