fix(moderation): added docstring to export argument in case command

moderation/moderation.py

@@ -1112,7 +1112,9 @@ class Moderation(commands.Cog):
         case_number: int
             What case are you looking up?
         ephemeral: bool
-            Hide the command response"""
+            Hide the command response
+        export: bool
+            Export the case to a JSON file"""
         permissions = self.check_permissions(interaction.client.user, ['embed_links'], interaction)
         if permissions:
             await interaction.response.send_message(f"I do not have the `{permissions}` permission, required for this action.", ephemeral=True)