When the spot api path contains ‘/futures’, the endpoint will be incorrectly set to the futures endpoint

[aweiu]

Related APIs：https://binance-docs.github.io/apidocs/spot/en/#copy-trading-endpoints

Related Codes：

• https://github.com/ViewBlock/binance-api-node/blob/6d27134ad8bcfa77ab9eef85b8daa644711d00b5/src/http-client.js#L126
• https://github.com/ViewBlock/binance-api-node/blob/6d27134ad8bcfa77ab9eef85b8daa644711d00b5/src/http-client.js#L199