"Help" pane not rendering google-style docstring well

[jsh9]

You can reproduce this issue by installing pytorch (https://pytorch.org/get-started/locally/), load the doc of a pytorch class (for example, torch.nn.LSTM) into Spyder's "Help" pane, and compare it with Sphinx's rendering.

========================

Spyder's rendering:

(I use red lines to mark where formatting is incorrect.)

===========================

Sphinx's rendering:
https://pytorch.org/docs/stable/nn.html?highlight=lstm#torch.nn.LSTM
(It will take a few seconds to load this page)

[ccordoba12]

We'll take a look at this for Spyder 5.

[grlee77]

linking #2046 as a related issue