modify README

Signed-off-by: MregXN <[email protected]>

Author: MregXN

examples/pubsub/README.md

@@ -41,7 +41,8 @@ By default, the example uses HTTP. To use gRPC instead:
       daprPort: process.env.DAPR_GRPC_PORT,
     },
   });
-  const client = new DaprClient(daprHost, process.env.DAPR_GRPC_PORT, CommunicationProtocolEnum.GRPC);
+
+  const client = new DaprClient({daprHost, daprPort:process.env.DAPR_GRPC_PORT, communicationProtocol:CommunicationProtocolEnum.GRPC});
   ```
 
 - To run: