docs: fix markdown code block formatting issue
docs: fix markdown code block formatting issue

this fixes the issue of the code block not being rendered
correctly from markdown into html.

Signed-off-by: Gregor Krmelj <5fdc67d2166bcdd1d3aa4ed45ea5a25e9b21bc20@krmelj.xyz>

rook/nfs,rook/rook,rook/rook,rook/rook,rook/rook,rook/nfs,rook/nfs,rook/rook