Great, thank you!
Anyone who wants to try their own variation of this, I only needed to change the lines with:

1. "translatorID" (apply a new GUID)
2. "label"
3. Zotero.write() ---multiple lines

Sure, (just a note here that the three steps above are straightforward even though I am not well versed in programming, I simply modified the Scannable Cite thanks to the previous creators)
this works for me when I save the following as MyMarkdownLink.js in my Zotero translator folder inside the Zotero data directory ( https://www.zotero.org/support/zotero_data ) :

{
"translatorID": "b578986e-4ac5-4735-b938-d8f2f95b850a",
"label": "MyMarkdownLink",
"priorlabel": "Scannable Cite",
"priorcreator": "Scott Campbell, Avram Lyon, Nathan Schneider, Sebastian Karcher, Frank Bennett",

"target": "html",
"minVersion": "3.0",
"maxVersion": "",
"priority": 100,
"displayOptions": {
"exportCharset": "UTF-8"
},
"inRepository": true,
"translatorType": 2,
"browserSupport": "",
"lastUpdated": "2020-012-17 09:13:04"
}

// legal types are weird
const LEGAL_TYPES = ["bill","case","gazette","hearing","patent","regulation","statute","treaty"];
const Mem = function (item) {
let lst = [];
const isLegal = LEGAL_TYPES.includes(item.itemType);
this.set = function (str, punc, slug) { if (!punc) {punc="";} if (str) {lst.push((str + punc));} else if (!isLegal) {lst.push(slug);}};
this.setlaw = function (str, punc) { if (!punc) {punc="";} if (str && isLegal) {lst.push(str + punc);}};
this.get = function () { return lst.join(" "); };
};

function doExport() {
let item;
while (item = Zotero.nextItem()) {
let mem = new Mem(item);
let memdate = new Mem(item);
Zotero.write("[");
let library_id = item.libraryID ? item.libraryID : 0;
if (item.creators.length >0){
mem.set(item.creators[0].lastName,",");
if (item.creators.length > 2) mem.set("et al.", ",");
else if (item.creators.length == 2) mem.set("& " + item.creators[1].lastName, ",");
}
else {
mem.set(false, ",","anon.");
}
if (Zotero.getHiddenPref("ODFScan.includeTitle") || item.creators.length === 0) {
mem.set(item.title,",","(no title)");
}
mem.setlaw(item.authority, ",");
mem.setlaw(item.volume);
mem.setlaw(item.reporter);
mem.setlaw(item.pages);
memdate.setlaw(item.court,",");
let date = Zotero.Utilities.strToDate(item.date);
let dateS = (date.year) ? date.year : item.date;
memdate.set(dateS,"","no date");
Zotero.write(mem.get() + " " + memdate.get() + "](");
//if (Zotero.getHiddenPref("ODFScan.useZoteroSelect")) {
if (1) {
Zotero.write("zotero://select/items/" + library_id + "_" + item.key + ")");
} else {
let m = item.uri.match(/http:\/\/zotero\.org\/(users|groups)\/([^\/]+)\/items\/(.+)/);
let prefix;
let lib;
let key;
if (m) {
if (m[1] === "users") {
prefix = "zu:";
if (m[2] === "local") {
lib = "0";
} else {
lib = m[2];
}
} else {
prefix = "zg:";
lib = m[2];
}
} else {
prefix = "zu:";
lib = "0";
}
Zotero.write(prefix + lib + ":" + item.key + "}");
}
}
}