Fix syntax error

Fortune for async-timeout-js's current commit: Blessing − 吉

asynctimeout.js

@@ -22,7 +22,7 @@ function AsyncTimeout(thing, interval)
 			} catch(e) { reject(e); }
 		}, interval);
 	});
-	this.interval = async function*() => {
+	this.interval = async function*() {
 		while(true) {
 			yield await new Promise((resolve, reject) => {
 				setTimeout(() => {
@@ -43,4 +43,4 @@ const example = async (_timeout) => {
 	for await (const value of new AsyncTimeout(() => "hi forever", _timeout).interval()) { alert(value); }
 };
 
-
+//(async () => { example() })();