add docs

lib/app/communications/customer.js

@@ -812,7 +812,7 @@ export default class CustomerCommunication {
                                         type: Grid.ColumnTypes.Checkbox,
                                         width: 50,
                                         enabled: item => !item.OptOut && !item.OptOut_BC,
-                                        onchanged: function () {
+                                        onChanged: function () {
                                             if (typeof option.onChanged === 'function') {
                                                 option.onChanged([...This._var.gridContact.source, ...This._var.gridWo.source]);
                                             }