text: Title: 'BERTopic' object has no attribute 'reduce_outliers'
  Body: i am not able to use reduce_outliers as it is showing a error as shown below
  ![Screenshot 2023-07-12 152526](https://github.com/MaartenGr/BERTopic/assets/73096699/ea67cc9b-9399-49a3-aa08-4397b0fb93bf)
  Can you guide me on how do i solve this?