Update config artifacts

Author: anthonycastiglia-toast

elasticgraph-local/lib/elastic_graph/local/spec_support/config_schema.yaml

@@ -145,8 +145,9 @@ properties:
                 - string
                 - 'null'
                 description: Named search cluster to be used for queries on this index.
-                  The value must match be a key in the `clusters` map. Set to `nil`
-                  to hide this index's types from the GraphQL schema.
+                  The value must match be a key in the `clusters` map. Set to `null`
+                  to hide this index's types in the GraphQL schema returned from the
+                  GraphQL endpoint.
                 examples:
                 - main
                 - search_cluster