Fixed read prefix

First iteration work with cog from slash command

cogs/first_cog.py

@@ -1,3 +1,5 @@
+import logging
+
 from discord.ext import commands
 
 
@@ -7,7 +9,7 @@ class Test_Cog(commands.Cog):
 
     @commands.Cog.listener()  # this is a decorator for events/listeners
     async def on_ready(self):
-        print('Bot is ready!.')
+        logging.info(f'Cog {__name__.split(".")[1]} is ready!.')
 
     @commands.command()  # this is for making a command
     async def ping(self, ctx):