fix readme

Author: felipecsl

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, 19.x]
+        node-version: [16.x, 18.x, 19.x, 20.x]
 
     steps:
       - uses: actions/checkout@v3

README.md

@@ -65,8 +65,8 @@ yarn start
 ```typescript
 import WsJsonClient from "tda-wsjson-client/wsJsonClient";
 
-const client = new WsJsonClient(accessToken);
-await client.authenticate();
+const client = new WsJsonClient();
+await client.authenticate(accessToken);
 console.log(loginResponse);
 const chartRequest = {
   symbol: "UBER",