I am just trying to add footnotes in my GitHub Gist, but it doesn\'t work:
Some long sentence. [^footnote]
[^footnote]: Test, [Link](https://google.com).
Although I am not aware if it's officially documented anywhere, you can do footer notes in Github.
Mark the place where you want to insert footer link with a number enclosed in square brackets, I.E. [1]
On the bottom of the post, make a reference of the numbered marker and followed by a colon and the link, I.E. [1]: http://www.example.com/link1
And once you preview it, it will be rendered as numbered links in the body of the post.