Download Button redirects to 404

**Your Godot version:** 4.5.1, "Stable" on the docs site

**Issue description:** The "Download" button in the info box in the bottom right redirects to a 404, specifically `https://docs.godotengine.org/en/stable/null`

**URL to the documentation page:** https://docs.godotengine.org/en/stable

Screenshots below for illustration:

I noticed that there still is the direct link at the bottom of the homepage so fixing this is (hopefully) relatively easy, although I don't have the time to get into how to do this myself.