lima-vm.io/docs should show non-master releases (or should remove the broken `Releases` button)

[AkihiroSuda]

https://lima-vm.io/docs should show non-master releases

Or maybe we can just remove the broken Releases button

[olamilekan000]

Does something like this work?

or this without the dropdown

Users get redirected to https://github.com/lima-vm/lima/releases when the click the button.

[AkihiroSuda]

The latter one seems good (until we can actually build multi-versioned document site)