fix download caddy url

[skorotkiewicz]

No description provided.

[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
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[killianbrackey]

Thanks for the submission @modinfo -- is the current link broken? The current link is there to grab all of the pre-packaged middlewares

[runningman84]

the current link is broken...