You can try it with that Markdown Tables Generator (whose example looks like the one you mention in your question, so you may be aware of it already). Not that I know of, because all markdown references I am aware of, like this one, mention: | item1item2| See the list | from the first column| MacDown sports two panes you type on the left and preview the formatted text on the right. MacDown provides excellent Markdown support. The application is free and open source, and it strikes a good balance between power and simplicity. Markdown mixed with HTML: | Tables | Are | Cool | MacDown is one of the best Markdown editors available for macOS. Github Flavored Markdown supports basic HTML in. Separate paragraphs by a single blank line. The right Markdown should simply be what you have in your syntax, but remove the first row: Stretch/Untouched ProbDistribution Accuracy. You duplicated the alignment at the top of the table and where it's actually supposed to go.

md files from Github, I always like to use HTML code instead of markdown. To insert a line break (new line), place two or more trailing spaces at the end of the line. The first row of the table defines the headers, then the next row defines the alignment of each column.

Macdown table