update some images

https://aws.amazon.com/blogs/aws/now-open-fourth-availability-zone-in-the-aws-asia-pacific-seoul-region/

https://www.hashicorp.com/blog/announcing-terraform-aws-cloud-control-provider-tech-preview

https://www.hashicorp.com/blog/terraform-aws-cloud-control-api-provider-now-generally-available

Author: PatMyron

README.md

@@ -42,11 +42,9 @@ https://aws.amazon.com/about-aws/global-infrastructure/regions_az/
 
 https://cloud.google.com/about/locations/
 
-https://docs.microsoft.com/en-us/azure/availability-zones/az-overview
+https://learn.microsoft.com/en-us/azure/reliability/availability-zones-service-support
 
-![](img/aws-azs-per-region.png)
-![](img/gcp-azs-per-region.png)
-![](img/azure-azs-per-region.png)
+![](img/azs-per-region.png)
 
 # instance type regional availability
 ```shell