In an issue raised here it was pointed out that the main web page’s link to Ardupilot’s Github (found in the footer section) resulted in a 404 error.
After inspection, I found that the link provided in the HTML page was :
https://ardupilot.org/github.com/ArduPilot
As we can see the above link is wrong and should be replaced with:
https://github.com/ArduPilot
It would be great if someone could fix this. Thanks!