Update rdls_schema.json

Dataset Identifier URL pointing to readthedocs version of docs, which does not give correct guidance. Replaced with correct location of guidance on how to complete dataset identifier, on docs.riskdatalibrary.org

schema/rdls_schema.json

@@ -19,7 +19,7 @@
     "id": {
       "title": "Dataset identifier",
       "type": "string",
-      "description": "A unique identifier for the dataset. Use of an HTTP URI is recommended. For more information, see [how to assign a dataset identifier](https://rdl-standard.readthedocs.io/en/{{version}}/reference/codelists/#assign-a-dataset-identifier).",
+      "description": "A unique identifier for the dataset. Use of an HTTP URI is recommended. For more information, see [how to assign a dataset identifier](https://docs.riskdatalibrary.org/en/{{version}}/guides/metadata/#assign-a-dataset-identifier).",
       "minLength": 1
     },
     "title": {