[Github Issue] Foris: Add Content-Type to generated root content
https://github.com/CZ-NIC/turris-os-packages/issues/45
DO NOT EDIT HERE! Copy fromBefore the root page was served as a .html
file: https://github.com/CZ-NIC/turris-os-packages/commit/e72d422319e6d814a07198787cf941fae8ea46ba#diff-271446ad865c93fbd6c102a33c33f4e1L75
We need the Content-Type: text/html
for it to be processed properly by the browser and displayed as HTML, and not just as plain text.