Question: headings not working

Hello.

I'm new to automodapi and i tried to do use your library for my python code:
"""
.. automodapi:: path.to.my.code.with.a.long.name.mycode
:inheritance-diagram:

.. automodapi:: path.to.my.code.with.a.long.name.mysecondcode
:inheritance-diagram:

"""

However my path is so long, it's baldy displayed in my doc. Especialy inside the table of content.

So i tried to use the :headings: option to change the name displayed and avoiding th

"""
.. automodapi:: path.to.my.code.with.a.long.name.mycode
:inheritance-diagram:
:headings: My_Title

.. automodapi:: path.to.my.code.with.a.long.name.mysecondcode
:inheritance-diagram:
:headings: My_second_Title
"""

However it didn't change the title in my table of content, but added a lot of the firsts letters in my titles like this in my page:
"""
automodapi:: path.to.my.code.with.a.long.name.mycode Package MMMMMMMMMMMMMMMMMMMM

Classes
[...]
Class Inheritance Diagram
[...]

path.to.my.code.with.a.long.name.mysecondcode Package YYYYYYYYYYYYYYYYYYYYYYYYYYY

Classes
[...]
Class Inheritance Diagram
[...]

"""

I didn't find any useful ressource except the documentation nor a satisfaying example on the internet.
Could you explain me if it's an issue or if i'm using something wrong ?

Start by reproducing the two `automodapi` directives from the issue, including `:headings:`, and compare the generated page and table of contents with the documented behavior. Trace the directive's heading option handling and identify whether the displayed titles are produced by the extension or Sphinx. Done means the configured headings appear correctly without the unwanted characters.

Written by the indexing model from the issue text.