Fix: themeTaxonomy namespace and help text (#236)

Author: imadbourouche

config/schemes/semantic_artefact_catalog.yml

@@ -589,7 +589,7 @@ record:
 themeTaxonomy:
   display: "general"
   label: "Theme Taxonomy"
-  helpText: "Taxonomy themes of the catalog."
+  helpText: "A knowledge organization system (KOS) used to classify catalog's datasets and services."
   example: [ "http://vocabularies.unesco.org/thesaurus" ]
   default: [ "http://vocabularies.unesco.org/thesaurus" ]
 

lib/ontologies_linked_data/models/mod/semantic_artefact_catalog.rb

@@ -53,7 +53,7 @@ class SemanticArtefactCatalog < LinkedData::Models::ModBase
             attribute :mailingList, namespace: :mod, enforce: [:url]
             attribute :fairScore, namespace: :mod, enforce: [:url]
 
-            attribute :themeTaxonomy, namespace: :mod, enforce: [:list, :url]
+            attribute :themeTaxonomy, namespace: :dcat, enforce: [:list, :url]
             attribute :federated_portals, enforce: [:list]
             attribute :fundedBy, namespace: :foaf, enforce: [:list]
             attribute :language, namespace: :dcterms, enforce: [:list]