Minor fix. "" to "async"

module/websocket.ts

@@ -3,7 +3,7 @@ import { WebSocket } from "https://deno.land/std/ws/mod.ts";
 export const keepDiscordWebsocketAlive = (socket: WebSocket, millesecondsInterval: number, payload: number | null = null) => {
 	let previousSequenceNumber = payload
 
-	setInterval(() => {
+	setInterval(async () => {
 		const response = await socket.send(JSON.stringify({
 			op: 1,
 			d: previousSequenceNumber