Address some ruff smells.

cogs/commands/__init__.py

@@ -1,6 +1,4 @@
-"""
-Cog loader. Adds all command cogs to the bot.
-"""
+"""Cog loader. Adds all command cogs to the bot."""
 
 from nextcord.ext import commands
 
@@ -9,8 +7,6 @@ from cogs.commands.hi import HiCog
 
 # This function will be called when this extension is loaded.
 # It is necessary to add these functions to the bot.
-def setup(bot: commands.Bot):
-    """
-    Adds all command classes to bot.
-    """
+def setup(bot: commands.Bot) -> None:
+    """Add all command classes to bot."""
     bot.add_cog(HiCog(bot))