[BUG] broken link to hugging face demo

**Describe the bug**
Link to Hugging Face demo results in 404.

**To Reproduce**
Steps to reproduce the behavior:
1. Click on demo link in README (Quickstart/point 1)
2. See error

**Expected behavior**
Non-404 page.

**Error messages**
```
404: Sorry, we can't find the page you are looking for.
```

**Environment (please complete the following information):**
 - N/A