fix filename

polymarket/libs/polymarketClient.js

@@ -4,7 +4,7 @@ import { HttpsProxyAgent } from "https-proxy-agent";
 import { ClobClient, Side, OrderType } from "@polymarket/clob-client";
 import { Wallet } from "ethers";
 
-import WebSocketClient from "./WebSocketClient.js";
+import WebSocketClient from "./webSocketClient.js";
 
 import Logs from "./logs.js";