convert to markdown - how to use backticks codeblocks?

[colttt]

Hi guys,

I try to convert from dokuwiki to markdown, but all the codeblocks are with spaces, how can I configure that the codeblock use backticks instead? I also try different markdown variants on https://pandoc.org/try/ but I don't get it.
How can I solve this issue? (when I read the docu, it should be possible somehow)

[jgm]

See #5280