Test code snippet fix

Author: jasonjoh

demo/graph-tutorial/src/app/nav-bar/nav-bar.component.ts

@@ -1,7 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-// <navBarComponent>
+// <navBar>
 import { Component, OnInit } from '@angular/core';
 
 import { AuthService } from '../auth.service';
@@ -45,4 +45,4 @@ export class NavBarComponent implements OnInit {
     this.authService.signOut();
   }
 }
-// </navBarComponent>
+// </navBar>

tutorial/04-add-aad-auth.md

@@ -103,7 +103,7 @@ In this section you'll create an authentication service and implement sign-in an
 
 1. Open the `./src/app/nav-bar/nav-bar.component.ts` file and replace its contents with the following.
 
-    :::code language="typescript" source="../demo/graph-tutorial/src/app/nav-bar/nav-bar.component.ts" id="navBarComponent" highlight="3,15-22,24,26-28,36-38,40-42":::
+    :::code language="typescript" source="../demo/graph-tutorial/src/app/nav-bar/nav-bar.component.ts" id="navBar" highlight="3,15-22,24,26-28,36-38,40-42":::
 
 1. Open`./src/app/home/home.component.ts` and replace its contents with the following.