added support for markdown format files in node notes

[AFLDT]

Is it possible to add support for markdown format files in node comments?
Because the current node editing can only add text in normal format and cannot write content in md format including code fragments, so the reading experience is not good

[raydac]

what do you mean as "node comments"? topic text or note?

[AFLDT]

I always hope to write nice md documents in this,
although it can only write ordinary txt format documents,
It's good enough though, and it would be even better if support for md document formats could be added