docs: fix bullet lists by adding trailing whitespace

[johannesjh]

I noticed these aren't rendered as bullet lists since they are missing trailing whitespace (for some reason github's renderer doesn't care):

https://github.com/johannesjh/req2flatpak/blob/847406f3afabee316059f3a484466c70651541a8/docs/source/development.rst?plain=1#L29-L33

Originally posted by @real-yfprojects in https://github.com/johannesjh/req2flatpak/issues/55#issuecomment-1512657372

[johannesjh]

Bulleted lists are broken in many (if not all) places in the documentation.

For example, here as screenshots of the README, as rendered by github, correctly rendered with bullets:

... and the same content rendered by sphinx, broken without bullets:

[real-yfprojects]

Yes its basically everywhere. Adding a trailing line after each bullet point should fix it.

[johannesjh]

Adding newlines between the bullet points did not work.

I found this stackoverflow question: https://stackoverflow.com/q/67542699 The answers suggest that it is a bug in sphinx-rtd-theme