docs: fix failing generic expression docstrings

[cpcloud]

Fix ibis.param, Value.name and ibis.table APIs example docstrings, all of which were failing to render.

I'm not entirely sure why these are failing given the add_ibis fixture's behavior, which should disable interactive mode before every doctest.

Closes #7787.

[cpcloud]

Ah, the add_ibis fixture isn't running when rendering docstrings using quarto!