style(aio): lint fixes for examples (#23234)

PR Close #23234

aio/content/examples/dynamic-component-loader/src/app/ad-banner.component.ts

@@ -19,7 +19,7 @@ import { AdComponent } from './ad.component';
 // #docregion class
 export class AdBannerComponent implements OnInit, OnDestroy {
   @Input() ads: AdItem[];
-  currentAdIndex: number = -1;
+  currentAdIndex = -1;
   @ViewChild(AdDirective) adHost: AdDirective;
   interval: any;
 

aio/content/examples/dynamic-component-loader/src/app/hero-job-ad.component.ts

@@ -6,8 +6,8 @@ import { AdComponent }      from './ad.component';
 @Component({
   template: `
     <div class="job-ad">
-      <h4>{{data.headline}}</h4> 
-      
+      <h4>{{data.headline}}</h4>
+
       {{data.body}}
     </div>
   `

aio/content/examples/dynamic-component-loader/src/app/hero-profile.component.ts

@@ -8,7 +8,7 @@ import { AdComponent }       from './ad.component';
     <div class="hero-profile">
       <h3>Featured Hero Profile</h3>
       <h4>{{data.name}}</h4>
-      
+
       <p>{{data.bio}}</p>
 
       <strong>Hire this hero today!</strong>