use prod keychain

Author: broody

examples/next/src/components/providers/StarknetProvider.tsx

@@ -204,7 +204,7 @@ const controller = new ControllerConnector({
   //
   // However, if you want to use custom RPC URLs, you can still specify them:
   chains: controllerConnectorChains,
-  url: getKeychainUrl(),
+  url: "https://x.cartridge.gg",
   signupOptions,
   slot: "arcade-pistols",
   namespace: "pistols",