Update README.md

README.md

@@ -160,7 +160,7 @@ The data fields on complex_content_format_constraint are as follows:
 * `language`: Describes the language of the test case.
 * `scenario`: Describes the scenario used in the test case.
 * `prompt`: Describes the task the model should perform.
-* `constraint_list`: An array of verifiable instructions. See the paper for the full set with their descriptions.
+* `constraint_list`: A nested dict of verifiable instructions. See the paper for the full set with their descriptions.
 
 The data fields on logical_workflow_control are as follows:
 * `idx`: A unique ID for the test case.