Update index.mdx

Author: robin-norwood

website/docs/plugin/framework/ephemeral-resources/index.mdx

@@ -3,7 +3,7 @@ page_title: Ephemeral resources
 description: >-
   Ephemeral resources allow Terraform to reference external data, while
   guaranteeing that this data will not be persisted in plan or state. Learn how
-  to implement ephemeral resources in the Terraform provider framework.
+  to implement ephemeral resources in the Terraform plugin framework.
 ---
 
 # Ephemeral resources