Fix `license` metadata (#1)

- Fix `license` metadata (5d3a8bc2c7d7e79a8b6d0eb1021d2d153b7d7936)


Co-authored-by: Julien Chaumond <julien-c@users.noreply.huggingface.co>

README.md

@@ -1,6 +1,6 @@
 ---
-languages:
+language:
 - si
-licenses:
+license:
 - mit
 ---