Update README.md

README.md

@@ -51,16 +51,17 @@ configs:
   - name: relations
     dtype:
       sequence:
-      - name: relationship
-        dtype:
-          class_label:
-            names:
-              '0': uncausal
-              '1': causal
-      - name: first
-        dtype: string
-      - name: second
-        dtype: string
+      - feature:
+        - name: relationship
+          dtype:
+            class_label:
+              names:
+                '0': uncausal
+                '1': causal
+        - name: first
+          dtype: string
+        - name: second
+          dtype: string
 train-eval-index:
 - config: causality detection
   task: text-classification