Exit pre mode (#2888)

* chore: update docs link

* chore: exit pre

.changeset/pre.json

@@ -1,5 +1,5 @@
 {
-  "mode": "pre",
+  "mode": "exit",
   "tag": "next",
   "initialVersions": {
     "@example/blog": "0.0.1",

packages/astro/src/core/add/index.ts

@@ -212,7 +212,7 @@ function createPrettyError(err: Error) {
 Reason: ${err.message}
 
 You will need to add these integration(s) manually.
-Documentation: https://next--astro-docs-2.netlify.app/en/guides/integrations-guide/`;
+Documentation: https://docs.astro.build/en/guides/integrations-guide/`;
 	return err;
 }