updated metadata

README.md

@@ -49,18 +49,17 @@ configs:
   - name: text
     dtype: string
   - name: relations
-    dtype:
-      sequence:
-      - name: relationship
-        dtype:
-          class_label:
-            names:
-              '0': uncausal
-              '1': causal
-      - name: first
-        dtype: string
-      - name: second
-        dtype: string
+    sequence:
+    - 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