Librarian Bot: Add language metadata for dataset (#2)

- Librarian Bot: Add language metadata for dataset (3e51c0395d3f84fcff3df7dd2f2e6d4c0ecd3d3b)


Co-authored-by: Librarian Bot (Bot) <librarian-bot@users.noreply.huggingface.co>

README.md

@@ -1,2 +1,6 @@
+---
+language:
+- en
+---
 Original data from:
 https://huggingface.co/datasets/BI55/MedText