title: Discord.py Uppercase And Lowercase
body: <p>I want the command to work when a letter is uppercase and lowercase, but I don't know how to do it. Please help me. Example:Ping PINg PiNg</p>
  
  <pre><code>@client.command()
  async def ping(ctx):
      await ctx.send(f'Pong! ``{round(client.latency * 1000)}``')
  </code></pre>