Added comment to clarify JSON request execution in executeRequest function

api/fiscal.go

@@ -8,6 +8,7 @@ import (
 )
 
 func (c *Client) executeRequest(ctx context.Context, request FiscalRequest, response interface{}) error {
+	//execute request with json body in request
 	reqJson, err := json.Marshal(request)
 	if err != nil {
 		return fmt.Errorf("failed to marshal request: %w", err)