docs(aio): update migrated content from anguar.io

aio/content/examples/security/src/app/inner-html-binding.component.ts

@@ -0,0 +1,12 @@
+// #docregion
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'inner-html-binding',
+  templateUrl: './inner-html-binding.component.html',
+})
+// #docregion class
+export class InnerHtmlBindingComponent {
+  // For example, a user/attacker-controlled value from a URL.
+  htmlSnippet = 'Template <script>alert("0wned")</script> <b>Syntax</b>';
+}