`autodoc2_module_summary = False` should still print non-summary API

[davidselassie]

When autodoc2_module_summary = False, each module's page only includes the "Submodules" heading at the top and no other API documentation. I assume this is unintended, and the "summary" being referenced in this config option should only be the tables of each item type at the top of each module.

I think this might have been an off-by-one indentation level error? The code to render the non-summary parts was accidentally indented to the level of the summary check if.

If the existing behavior is the intended behavior of this config option, let me know and maybe we can change this to better document what the behavior should be.

I didn't include any tests because I didn't see a pattern for handling combinations of config options, but I did test manually. If you want me to add something that tests this in isolation, let me know.

Thanks!