update metadata

Signed-off-by: Sami Jaghouar <sami.jaghouar@gmail.com>

README.md

@@ -1,17 +1,17 @@
 ---
 license: odc-by
 dataset_info:
-- config_name: en
-  features:
-  - name: text
-    dtype: string
-  - name: timestamp
-    dtype: string
-  - name: url
-    dtype: string
-  splits:
-  - name: train
-  - name: validation
+  - config_name: en
+    features:
+    - name: text
+      dtype: string
+    - name: timestamp
+      dtype: string
+    - name: url
+      dtype: string
+    splits:
+    - name: train
+    - name: validation
 ---
 
 # C4 tiny