[fix] parameters of datacollection map(), mapRange() in examples

Author: mafanya23

docs/data_collection/api/datacollection_map_method.md

@@ -21,7 +21,7 @@ A new array of items where each item is the result of the callback function.
 
 @example:
 //getting ids of all items of the component
-component.data.map(function(item){
+component.data.map(function(item, index, array){
     return item.id;
 });
 

docs/data_collection/api/datacollection_maprange_method.md

@@ -22,7 +22,7 @@ description: You can explore the mapRange method of DataCollection in the docume
 A new array of matching item objects.
 
 @example:
-const result = component.data.mapRange(0, 20, function(item, index) {
+const result = component.data.mapRange(0, 20, function(item, index, array) {
     console.log(item.id, index);
 });