Update collectInto.md

snippets/collectInto.md

@@ -8,9 +8,9 @@ Given a function, return a closure that collects all inputs into an array-accept
 const collectInto = fn => ( ...args ) => fn( args );
 /*
 const Pall = collectInto( Promise.all.bind(Promise) )
-var p1 = Promise.resolve(1)
-var p2 = Promise.resolve(2)
-var p3 = new Promise((resolve) => setTimeout(resolve,2000,3))
+let p1 = Promise.resolve(1)
+let p2 = Promise.resolve(2)
+let p3 = new Promise((resolve) => setTimeout(resolve,2000,3))
 Pall(p1, p2, p3).then(console.log)
 */
 ```