replaced HA diagrams with SVG files

website/content/docs/nia/usage/run-ha.mdx

@@ -21,11 +21,11 @@ In a standard configuration, CTS exits if errors occur when the CTS instance run
 
 The following diagram shows operating state when high availability is enabled:
 
-![Consul-Terraform-Sync architecture configured for high availability before a shutdown event](/img/nia/cts-ha-before.png)
+![Consul-Terraform-Sync architecture configured for high availability before a shutdown event](/img/nia/cts-ha-before.svg)
 
 The following diagram shows the CTS cluster state after the leader stops. CTS Instance B becomes the leader responsible for monitoring and running tasks.
 
-![Consul-Terraform-Sync architecture configured for high availability before a shutdown event](/img/nia/cts-ha-after.png)
+![Consul-Terraform-Sync architecture configured for high availability before a shutdown event](/img/nia/cts-ha-after.svg)
 
 ### Failover details