Update README to include the english partition.

README.md

@@ -32,6 +32,12 @@ configs:
     path: de/train.jsonl
   - split: test
     path: de/test.jsonl
+- config_name: en
+  data_files:
+  - split: train
+    path: en/train.jsonl
+  - split: test
+    path: en/test.jsonl
 license: mit
 language:
 - pt