Remove contributing docs on the outdated wizard files who were previously part of the docs repository (#12373)

Author: stephanie-anderson

docs/contributing/onboarding-wizard.mdx

@@ -3,4 +3,4 @@
 /// <reference types="next/navigation-types/compat/navigation" />
 
 // NOTE: This file should not be edited
-// see https://nextjs.org/docs/app/building-your-application/configuring/typescript for more information.
+// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

next-env.d.ts

@@ -3357,6 +3357,10 @@ const USER_DOCS_REDIRECTS: Redirect[] = [
     from: '/organization/integrations/incidentio/',
     to: '/organization/integrations/issue-tracking/incidentio/',
   },
+  {
+    from: '/contributing/onboarding-wizard/',
+    to: '/contributing/',
+  },
 ];
 
 const DEVELOPER_DOCS_REDIRECTS: Redirect[] = [