Don't use locale-specific link to Azure doc

Home.md

@@ -51,7 +51,7 @@ You can run Docker commands to manage [images](https://docs.docker.com/engine/re
 
 ## Using image registries
 
-You can display the content and push/pull/delete images from [Docker Hub](https://hub.docker.com/) and [Azure Container Registry](https://docs.microsoft.com/en-us/azure/container-registry/):
+You can display the content and push/pull/delete images from [Docker Hub](https://hub.docker.com/) and [Azure Container Registry](https://docs.microsoft.com/azure/container-registry/):
 
 [[images/home-container-registry.png|alt=Azure Container Registry content]]