Typo

Author: brentguf

1-js/06-advanced-functions/08-settimeout-setinterval/3-rewrite-settimeout/solution.md

@@ -15,7 +15,7 @@ function count() {
 
   if (i == 1000000000) {
     alert("Done in " + (Date.now() - start) + 'ms');
-    cancelInterval(timer);
+    clearInterval(timer);
   }
 
 }