Updated docs

scripts/library.js

@@ -416,7 +416,7 @@ function Library (client) {
   this.each = (arr, fn) => { // Run a function for each element in a list.
     for (let i = 0; i < arr.length; i++) {
       const arg = arr[i]
-      fn(arg)
+      fn(arg,i)
     }
   }