message: docs(README): remove hard-coded prefix from usage
diff: @@ -52,7 +52,7 @@ startBot({
  console.log("Successfully connected to gateway");
  },
  messageCreate(message) {
  - if (message.content === "!ping") {
  + if (message.content === "ping") {
  message.reply("Pong using Discordeno!");
  }
  },
  