sphinx-bootstrap-theme | Sphinx Bootstrap Theme | Frontend Framework library

I have some API Documentation which I'm mostly happy with.

I'm using the sphinx_bootstrap_theme to render my doc style. However, I want to modify how each API method renders.

Today the docs look like this:

I want to make a small change to the bootstrap theme, such that I get an HR between every method like this:

QUESTION:
Where do I modify sphinx_bootstrap_theme such that I can customize the rendering of these methods?

I looked through the sphinx_bootstrap_theme templates, but I can't seem to find the template I have to monkey with to make this work right.

If you want to see how I've configured my docs, you can find the source tree here