docs: modify import (#45828)

Modify import after moving Component and Directives

PR Close #45828

aio/content/examples/content-projection/src/app/app.module.ts

@@ -2,12 +2,12 @@ import { NgModule } from '@angular/core';
 import { BrowserModule } from '@angular/platform-browser';
 import { FormsModule } from '@angular/forms';
 
+import { AppComponent } from './app.component';
 import {
-  AppComponent,
   ZippyComponent,
   ZippyContentDirective,
   ZippyToggleDirective,
-} from './app.component';
+} from './example-zippy.component';
 import { ZippyBasicComponent } from './zippy-basic/zippy-basic.component';
 import { ZippyMultislotComponent } from './zippy-multislot/zippy-multislot.component';
 import { ZippyNgprojectasComponent } from './zippy-ngprojectas/zippy-ngprojectas.component';