Markdown: Nested Lists

[youri--]

Slide version: 6.7.1 Android version: 11

Nested lists in comments aren't rendered properly by the comment preview, nor by the final comment display.

Nested unordered lists need 2 or more spaces at the start of a line, ordered lists 3 or more spaces, according to https://www.reddit.com/wiki/markdown#wiki_lists

This was a problem (#682) that was supposedly fixed. Maybe it was and there was a regression, or this (admittedly niche) thing was overlooked. Was recommended by @l3d00m to start new issue.

Thanks