docs: Add a new Azure deployment method (runatlantis#2741)

* docs: Add a new Azure deployment method

* docs: Revert the old ACI link while keeping the new one

* docs: Improve wording for Azure deployment

runatlantis.io/docs/deployment.md

@@ -563,7 +563,8 @@ If you need to modify the Docker image that we provide, for instance to add the
 ### Microsoft Azure
 The standard [Kubernetes Helm Chart](#kubernetes-helm-chart) should work fine on [Azure Kubernetes Service](https://docs.microsoft.com/en-us/azure/aks/intro-kubernetes).
 
-Another option is [Azure Container Instances](https://docs.microsoft.com/en-us/azure/container-instances/). See this community member's [repo](https://github.com/jplane/atlantis-on-aci) for install scripts and more information on running Atlantis on ACI.
+
+Another option is [Azure Container Instances](https://docs.microsoft.com/en-us/azure/container-instances/). See this community member's [repo](https://github.com/jplane/atlantis-on-aci) or the new and more up-to-date [Terraform module](https://github.com/getindata/terraform-azurerm-atlantis) for install scripts and more information on running Atlantis on ACI.    
 
 ### Roll Your Own
 If you want to roll your own Atlantis installation, you can get the `atlantis`