fix: reword {{cite:id}} / {{fig:id}} in lutaml definitions to unbreak make CI

[ronaldtse]

Summary

The make workflow has been failing on every commit since 0a13f26 (2026-06-11, 16+ commits back) because the lutaml 0.10.x DSL parser's definition_body rule stops at the first } character. When a definition { ... } block contained {{cite:id}} or {{fig:id}} (the inline mention syntax), the parser truncated the definition at the first } and failed to match the rest.

Five occurrences across three files reworded to the bare mention form (cite:id, fig:id) — preserves semantic meaning without parser-hostile braces:

• models/concepts/ConceptSource.lutaml — 3 occurrences (introduced by 0a13f26)
• models/concepts/SharedNonVerbalEntity.lutaml — 1 occurrence (introduced by 300b7c1)
• models/concepts/BibliographyEntry.lutaml — 1 occurrence (introduced by 300b7c1)

Regenerated the four tracked PNGs against lutaml 0.10.18.

Root cause

# lutaml-0.10.x/lib/lutaml/uml/parsers/dsl.rb:301
rule(:definition_body) do
  spaces? >>
    str("definition") >>
    whitespace? >>
    str("{") >>
    ((str("\\") >> any) | (str("}").absent? >> any))   # <-- stops at first "}"
      .repeat.maybe.as(:definition) >>
    str("}")
end

The body character class consumes anything that isn't }, so {{cite:id}} ends the body at the first } of the }} pair, leaving a stray } that breaks the surrounding class_body parse.

Test plan

• lutaml lml generate -t png -o /tmp/x.png views/ConceptSource.lutaml — succeeds
• All four view files (ConceptSource, Concepts, Designations, ManagedConcepts) generate
• make — all 4 PNGs regenerate cleanly
• CI green on this PR