readme: add language tags

README.md

@@ -11,16 +11,16 @@ dataset_info:
     dtype: int64
   splits:
   - name: train
-    num_bytes: 250870.0
+    num_bytes: 250870
     num_examples: 640
   - name: val
-    num_bytes: 64582.0
+    num_bytes: 64582
     num_examples: 160
   - name: if_test
-    num_bytes: 238485.0
+    num_bytes: 238485
     num_examples: 597
   - name: f_test
-    num_bytes: 249702.0
+    num_bytes: 249702
     num_examples: 597
   - name: f_flores
     num_bytes: 312159
@@ -29,7 +29,10 @@ dataset_info:
     num_bytes: 312159
     num_examples: 1012
   download_size: 0
-  dataset_size: 1427957.0
+  dataset_size: 1427957
+language:
+- en
+- ko
 ---
 # Dataset Card for "iwslt-2023-en-ko-train-val-split-0.2"