Remove spacing between bullet points and lists

[LeMurphant]

https://docs.google.com/document/d/1YKA4i_3rfMMGrWLtvzNy9IplYgS4Ialdc6f-Rfu-CBg/edit
https://aisafety.info/questions/9B85/Isn't-the-real-concern-misuse

It seems to me (and Taylor and Steven) that the vertical spacing between bullet points (or numbered points) is excessive

[bryceerobertson]

@LeMurphant is this looking better now?

[LeMurphant]

Yep looks good to me, thanks!

[LeMurphant]

Unfortunately we now have issues with insufficient spacing in some cases

[LeMurphant]

See also here for a similar effect
https://aisafety.info/questions/8185/

[LeMurphant]

This might be related to #352

[Algon-33]

Claire, @LeMurphant's friend, wants there to be more space after embedded videos in our articles. This seems like a related problem. Please fix it.