Update README.md

<audio controls src="https://cdn-uploads.huggingface.co/production/uploads/660c420eb7473305cf9db6a8/CkZQz8mm3BQvG05bTuviU.mpga"></audio>

README.md

@@ -1,3 +1,5 @@
 ---
 license: gpl-3.0
----
+language:
+- pl
+---