modified the just testdoc command for the documentation

Author: HendrikBorgelt

docs/assets/coremeta4cat_vocabulary.xlsx

@@ -17916,5 +17916,5 @@ metamodel_version: 1.7.0
 source_file: coremeta4cat.yaml
 source_file_date: '2026-06-05T13:11:48'
 source_file_size: 6777
-generation_date: '2026-06-06T00:34:21'
+generation_date: '2026-06-06T13:16:00'
 

docs/assets/metadata_characterization_hierarchy.html

@@ -99,7 +99,7 @@ gen-doc: schema-to-excel _gen-yaml
 
 # Build docs and run test server
 [group('model development')]
-testdoc: gen-doc _serve
+testdoc: gen-doc gen-schema-docs gen-charts _serve
 
 # Generate the Python data models (dataclasses & pydantic)
 gen-python: