docs: move import statement of ngmodule from standalone component to …

…module code #53952 (#54016)

PR Close #54016

aio/content/guide/what-is-angular.md

@@ -311,6 +311,7 @@ Standalone components are a new organizational pattern that were introduced in A
 For example, in the traditional NgModule pattern, you would need to create a TodoModule and manage all of its dependencies through this module.
 
 ```ts (Todo.module.ts)
+import {NgModule} from '@angular/core';
 import {FormsModule} from '@angular/forms';
 import {TodoList} from '../todo/todo-list.component';
 
@@ -325,7 +326,6 @@ export class TodoModule {}
 However, you can now achieve something similar with a standalone component without the need for a module file:
 
 ```ts (Todo.component.ts)
-import {NgModule} from '@angular/core';
 import {FormsModule} from '@angular/forms';
 import {TodoList} from '../todo/todo-list.component';