You can fix the link by yourself, have a look at the other profiles. However even after downloading and installing it, it ends up in a “Unable to Check for Update” for me.
holgr
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Update: working and downloading the beta now. Triggered it via Software Update on the Watch after installing the profile.
I'm noticing similar issues here with code that hasn't changed on my end. It broke at around 13:25 PT for me. Stuck ever since.