markowa pusta linia
// If markdown engine not support html
<br /> // If support html
mrhm.dev
// If markdown engine not support html
<br /> // If support html
The non-breaking space ASCII character (followed by a blank line)
would give a blank line.
Repeating this pair would do the job.
Example
Hello
world
The source answer
https://stackoverflow.com/questions/20543454/create-two-blank-lines-in-markdown