fix: added api-definitions product

Author: Kapil Gowru

fern/docs.yml

@@ -558,7 +558,7 @@ redirects:
   # ============================================================================
 
   - source: /learn/openapi-definition/:slug*
-    destination: /api-definitions/openapi/:slug*
+    destination: /learn/api-definitions/openapi/:slug*
     permanent: true
   - source: /learn/asyncapi-definition/:slug*
     destination: /learn/api-definitions/asyncapi/:slug*