Add language tag

Hi
A PR to improve the referencing of your dataset 🤗

README.md

@@ -1,25 +1,28 @@
----
-license: apache-2.0
-dataset_info:
-  features:
-  - name: french
-    dtype: string
-  - name: fon
-    dtype: string
-  splits:
-  - name: train
-    num_bytes: 1102587.3977873977
-    num_examples: 3326
-  - name: test
-    num_bytes: 275812.6022126022
-    num_examples: 832
-  download_size: 743131
-  dataset_size: 1378400.0
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-  - split: test
-    path: data/test-*
----
+---
+license: apache-2.0
+dataset_info:
+  features:
+  - name: french
+    dtype: string
+  - name: fon
+    dtype: string
+  splits:
+  - name: train
+    num_bytes: 1102587.3977873977
+    num_examples: 3326
+  - name: test
+    num_bytes: 275812.6022126022
+    num_examples: 832
+  download_size: 743131
+  dataset_size: 1378400
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+  - split: test
+    path: data/test-*
+language:
+- fr
+- fon
+---