Update README.md

README.md

@@ -45,7 +45,7 @@ git clone https://github.com/soos3d/node-proxy-server-to-protect-your-rpc-url-en
 Edit the `.env.sample` file to include your node RPC URL key and rename it to `.env`.
 
 ```env
-ETHEREUM_RPC_URL="YOUR_CHAINSTACK_ENDPOINT_URL"
+ETHEREUM_RPC_URL="YOUR_CHAINSTACK_NODE_URL"
 ```
 
 Install  dependencies:
@@ -60,10 +60,10 @@ Run the server in dev mode with:
 npm run dev
 ```
 
-The server is now running on `http://localhost:3000/`. You can send balance requests to your server with the following:
+The server is now running on `http://localhost:4000/`. You can send balance requests to your server with the following:
 
 ```sh
-curl --location 'http://localhost:3000/balance' \
+curl --location 'http://localhost:4000/balance' \
 --header 'Content-Type: application/json' \
 --data '{"address":"0xc457C11e2d7b6Ed68516CdED897c2Ab9F41e022C"}'
 ```