well, to express it simply, i can see HTML comments in a rendered markdown file as a plaintext. Here is a screenshot:
Here is my config:
{
"src": [
"./src/**.js",
"./lib/**.js",
"./index.js",
"./README.md"
],
"dest": "docs",
"jsdoc": {
"package": true,
"undocumented": true,
"sort": "kind"
}
}