Add language tag

Hi
A PR to improve the referencing of your dataset 🤗

README.md

@@ -1,58 +1,4 @@
 ---
-dataset_info:
-- config_name: dev
-  features:
-  - name: text
-    dtype: string
-  - name: label
-    dtype: string
-  - name: prediction_oneshot
-    dtype: string
-  - name: response_oneshot
-    list:
-    - name: generated_text
-      dtype: string
-  - name: dataset
-    dtype: string
-  - name: split
-    dtype: string
-  - name: lang
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 58550850
-    num_examples: 17090
-  download_size: 12505629
-  dataset_size: 58550850
-- config_name: test
-  features:
-  - name: text
-    dtype: string
-  - name: prediction_oneshot
-    dtype: string
-  - name: response_oneshot
-    list:
-    - name: generated_text
-      dtype: string
-  - name: dataset
-    dtype: string
-  - name: split
-    dtype: string
-  - name: lang
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 42603749
-    num_examples: 12000
-  download_size: 9801222
-  dataset_size: 42603749
-configs:
-- config_name: dev
-  data_files:
-  - split: train
-    path: dev/train-*
-- config_name: test
-  data_files:
-  - split: train
-    path: test/train-*
----
+language:
+- fr
+---