chore: remove repetitive words (#413)

Signed-off-by: hugehope <[email protected]>

Author: hugehope

docs/api-docs/classes/bncclient.md

@@ -461,7 +461,7 @@ Name | Type | Default | Description |
 ------ | ------ | ------ | ------ |
 `address` | undefined | string | this.address | optional address |
 `startTime` | number | - | start time in milliseconds |
-`endTime` | number | - | end time in in milliseconds, endTime - startTime should be smaller than 7 days |
+`endTime` | number | - | end time in milliseconds, endTime - startTime should be smaller than 7 days |
 
 **Returns:** *Promise‹object | never[]›*
 

src/client/index.ts

@@ -961,7 +961,7 @@ export class BncClient {
    * get transactions for an account
    * @param {String} address optional address
    * @param {Number} startTime start time in milliseconds
-   * @param {Number} endTime end time in in milliseconds, endTime - startTime should be smaller than 7 days
+   * @param {Number} endTime end time in milliseconds, endTime - startTime should be smaller than 7 days
    * @return {Promise} resolves with http response ([more details](https://docs.binance.org/api-reference/dex-api/block-service.html#apiv1txs))
    * ```js
    * // Example: