fix: update typedoc for responseType

Author: inian

src/index.ts

@@ -33,7 +33,7 @@ export class FunctionsClient {
    * @param invokeOptions - object with the following properties
    * `headers`: object representing the headers to send with the request
    * `body`: the body of the request
-   * `responseType`: how the response should be parsed
+   * `responseType`: how the response should be parsed. The default is `json`
    */
   async invoke(
     functionName: string,