Update code-walkthrough.mdx

Author: robin-norwood

website/docs/plugin/framework/getting-started/code-walkthrough.mdx

@@ -1,7 +1,7 @@
 ---
 page_title: Provider code walkthrough
 description: >-
-  The Terraform provider framework is an SDK that you can use to implement
+  The Terraform plugin framework is an SDK that you can use to implement
   Terraform providers. Learn how the framework can help you create a provider
   by exploring its main components and libraries.
 ---