Footnotes don't work in Wiki

[mwisnicki]

I copied the example from https://docs.github.com/en/enterprise-cloud@latest/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#footnotes to wiki page but it does not render.

However it does work in issues as below.

---

Here is a simple footnote[^1].

A footnote can also have multiple lines[^2].

[^1]: My reference. [^2]: To add line breaks within a footnote, prefix new lines with 2 spaces. This is a second line.