fix test

Author: adolgachev

src/aria/tabs/testing/tabs-harness.spec.ts

@@ -132,9 +132,9 @@ describe('TabsHarness', () => {
   template: `
     <div ngTabs>
       <ul ngTabList [selectedTab]="'tab1'">
-        <li ngTab [panel]="tab1">Tab 1</li>
-        <li ngTab [panel]="tab2">Tab 2</li>
-        <li ngTab [panel]="tab3" [disabled]="true">Tab 3</li>
+        <li ngTab panel="tab1">Tab 1</li>
+        <li ngTab panel="tab2">Tab 2</li>
+        <li ngTab panel="tab3" [disabled]="true">Tab 3</li>
       </ul>