Update schema documentation for railML 2.3
Description
The railML schema documentation needs to be generated according to the new XSDs.
Changesets
- [changeset:"647/railML"] - Automatic schema documentation generated
- [changeset:"660/railML"] - XMLSpy schema documentation generated
- [changeset:"667/railML"] - adapting namespace from /2015/ to /2016/ (XSD files)
- [changeset:"668/railML"] - Updated namespace information from 2015 to 2016 (documentation)