Change type of owner field to string

src/datadoc/datadoc-json-schema.json

@@ -127,7 +127,7 @@
                 "owner": {
                     "title": "Owner",
                     "description": "Owner of the data set (responsible division in Statistics Norway). See also Classification of organisational units https://www.ssb.no/en/klass/klassifikasjoner/83",
-                    "$ref": "./no/languageStringType.json#/languageStringType"
+                    "$ref": "string"
                 },
                 "file_path": {
                     "title": "File path",