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

- Librarian Bot: Add language metadata for dataset (5ae0430b4611560f0e2f5f237f630ab4b1863812)


Co-authored-by: Librarian Bot (Bot) <[email protected]>

README.md

@@ -1,4 +1,6 @@
 ---
+language:
+- en
 license: apache-2.0
 ---
 Converted Super-NaturalInstructions to jsonl