docs: revise extend create product (#10444)

* docs: revise extend create product

* change sidebar title

www/apps/book/next.config.mjs

@@ -177,6 +177,12 @@ const nextConfig = {
         destination: "/learn/customization/extend-features/:path*",
         permanent: true,
       },
+      {
+        source: "/learn/customization/extend-features/create-links",
+        destination:
+          "/learn/customization/extend-features/extend-create-product",
+        permanent: true,
+      },
     ]
   },
 }