Fix titles of the documents.

content/docs.da.md

content/docs.eo.md

content/docs.no.md

content/docs.sv.md

content/home.da.md

content/home.eo.md

content/home.no.md

content/home.sv.md

content/screens.da.md

content/screens.eo.md

content/screens.no.md

content/screens.sv.md