node-binance-api.d.ts:1503:9 - error TS7010: 'deliveryTerminate', which lacks return-type annotation

Hello,

There is return-type forgotten which breaks the CI:

```
node_modules/node-binance-api/node-binance-api.d.ts:1503:9 - error TS7010: 'deliveryTerminate', which lacks return-type annotation, implicitly has an 'any' return type.
```

I will send a PR