I'm pretty sure that https://openwrt.org/toh/gl.inet/mt6000 is just shorthand for https://openwrt.org/toh/gl.inet/gl-mt6000 and the former should redirect to the later. I tried to do it myself but what I tried didn't seem to work, so I just reverted the change. Does anyone know the correct way to do that?
Alternatively, we could delete the mt6000 page.