Fixed read prefix

First iteration work with cog from slash command

cogs/test.py

@@ -1,18 +0,0 @@
-from discord.ext import commands
-
-
-class Test_Cog(commands.Cog):
-    def __init__(self, bot):
-        self.bot = bot  # defining bot as global var in class
-
-    @commands.Cog.listener()  # this is a decorator for events/listeners
-    async def on_ready(self):
-        print('Bot is ready!.')
-
-    @commands.command()  # this is for making a command
-    async def ping(self, ctx):
-        await ctx.send(f'Pong! {round(self.bot.latency * 1000)}')
-
-
-def setup(bot):  # a extension must have a setup function
-    bot.add_cog(Test_Cog(bot))  # adding a cog