Templates which are not IRI

[vorburger]

https://docs.enola.dev/models/example.org/templates/ should allow to declare templates which are not IRIs.

so on https://docs.enola.dev/models/example.org/greeting/,

the https://docs.enola.dev/models/example.org/greet/_NUMBER/?NUMBER=42 should be able to have

e.g. a bo, which is just a "42", but not a link.

As-is, this is not yet possible, and causes e.g. java.lang.IllegalArgumentException: URI is missing a scheme: tmp%2Fexample.txt Caused by: java.lang.IllegalArgumentException: URI is missing a scheme: tmp%2Fexample.txt Caused by: java.lang.IllegalArgumentException: IRI must be absolute problems.