use local link

Author: rachelwhitton

source/content/partials/nextjs-pre-ga.md

@@ -4,6 +4,6 @@ This documentation describes support for Next.js that is under active developmen
 
 To request an invite, [submit this form](https://pantheon.io/nextjs-beta).
 
-If you are migrating an existing Next.js site from our [Front-End Sites](https://docs.pantheon.io/guides/decoupled/overview) offering please see our guide on [migrating from Front-End Sites](/nextjs/migrating-from-front-end-sites).
+If you are migrating an existing Next.js site from our [Front-End Sites](/guides/decoupled/overview) offering please see our guide on [migrating from Front-End Sites](/nextjs/migrating-from-front-end-sites).
 
 </Alert>