schema error corrected

Author: tdudgeon

data-manager/rdkit.yaml

@@ -918,8 +918,7 @@ jobs:
             - pipe
           idColumn:
             title: Index (text) or name (SDF) to use for the ID field
-            type:
-            - string
+            type: string
             pattern: "^[A-Za-z0-9_\\.\\- ]+$"
           readRecords:
             title: Number of records to read field names