update doc

docs/en/UI/Angular/Entity-Action-Extensions.md

@@ -16,14 +16,13 @@ In this example, we will add a "Click Me!" action and alert the current row's `u
 
 The following code prepares a constant named `identityEntityActionContributors`, ready to be imported and used in your root module:
 
-```js
+```ts
 // src/app/entity-action-contributors.ts
 
-import {
+import { eIdentityComponents, IdentityEntityActionContributors } from '@abp/ng.identity';
-  eIdentityComponents,
+
-  IdentityEntityActionContributors,
+import { IdentityUserDto } from '@abp/ng.identity/proxy';
-  IdentityUserDto,
+
-} from '@abp/ng.identity';
 import { EntityAction, EntityActionList } from '@abp/ng.theme.shared/extensions';
 
 const alertUserName = new EntityAction<IdentityUserDto>({