Fix `license` metadata (#1)

- Fix `license` metadata (cf75a77e77f8f3f270a0f6a319dd0b14b5bca9e8)


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

README.md

@@ -1,8 +1,8 @@
 ---
-languages: 
+language: 
 - si
 
-licenses:
+license:
 - cc-by-sa-4.0
 
 task_categories: