Thanks for all the work on quarto - I've been really enjoying the flow of it.

I'm using quarto to render my jupyter notebook to pdf file.  

I expect to see standard behaviour of cross-referencing between markdown cells to cells containing my tables. This works when rendering to html, but fails when rendering to pdf.

Example cells:

Cell 1:
```markdown
In @tbl-summary-gen we see...
```

```python
#| echo: false
#| label: tbl-summary-gen
#| tbl-cap: "summary of hypothesis generation datasets"

df = pd.DataFrame(
    {
    "a":["2,3,4,5"],
    "b":["3,4,5,6"],
    }
)
df
```
2022-04-24T17:14:14Z
jazzbuck
closed
Fig captions not rendering in pdf output
https://github.com/quarto-dev/quarto-cli/issues/724