XML namespaces are missing 'http:'

Shouldn't they be https?

I'm seeing that http://purl.org/rss/1.0/modules/content/ redirects to https://web.resource.org/rss/1.0/modules/content/ but the apple guide does say http... https://help.apple.com/itc/podcasts_connect/#/itcbaf351599

Merging this, thanks for catching the regression!

Automatically closed - issue fixed for 2 weeks with no activity.