wrong content-type for rss20.xml

[peterdd]

I have a feed preview browser-addon installed. As you can see in attached screenshot, the rss20.xml is not delivered with correct content-type http header, so failing to render the rss feed in browser.

For comparison I added the yast.opensuse.org/feed.xml which seems to send the correct content-type header.

[hellcp]

That's because it's actually an html file on the server, it's served under rss20.xml/index.html for every language. This is more of a jekyll permalink bug than something we can fix here