Release 15.1 documentation formatting

[FedericoVaga]

Hello, I'm reading the ELBE 15.1 documentation. I think there is a rendering issue in the XML schema page. Fields description are just plain text, while I believe the expected result should be what we can read on the same page for version 14.9.3. Here XML nodes descriptions have names on a dedicated line, in bold, with links when pointing to other elements, then followed by a description on the next line.