Apply suggestion from @mmwinther

Co-authored-by: Miles Mason Winther <42948872+mmwinther@users.noreply.github.com>

Author: Jorgen-5

src/datadoc/datadoc-json-schema.json

@@ -10,7 +10,7 @@
     },
     "document_version": {
       "description": "Version of this model",
-      "const": "6.0.1"
+      "const": "6.1.0"
     },
     "dataset": {
       "type": "object",