… and people wonder why I dislike Markdown. (There are fairly radical rendering differences between the GitHub page and the spacevim.org page, because different Markdown renderers with different bugs have been used, and the Markdown was fairly sloppily written.)
It looks like whatever Github pages is using as renderer (kramdown iirc?) does not support postfix links like [dein.vim] here: https://raw.githubusercontent.com/SpaceVim/SpaceVim/dev/READ... The table rendering issues I suspect are from the lack of a newline after the headers. I don't know whether it's correct or not because, yknow, markdown. Still better than rst. :)
I like reStructuredText and work in it regularly. I’m sad that Markdown with all its terrible inconsistency, lack of extensibility, insecurity, &c. has prevailed.