Upload fishingderby/namespace_metadata.json with huggingface_hub

fishingderby/namespace_metadata.json

@@ -1 +1 @@
-{}
+{"display_name": "Fishing Derby", "description": "Your objective is to catch more sunfish than your opponent.\n\nFor a more detailed documentation, see [the ALE documentation](https://ale.farama.org/environments/fishing_derby)"}