Make 'counter' components use <h1> headers to be consistent with other pages

templates/Angular2Spa/ClientApp/app/components/counter/counter.component.html

@@ -1,4 +1,4 @@
-<h2>Counter</h2>
+<h1>Counter</h1>
 
 <p>This is a simple example of an Angular 2 component.</p>
 

templates/AureliaSpa/ClientApp/app/components/counter/counter.html

@@ -1,5 +1,5 @@
 <template>
-    <h2>Counter</h2>
+    <h1>Counter</h1>
 
     <p>This is a simple example of an Aurelia component.</p>
 

templates/KnockoutSpa/ClientApp/components/counter-example/counter-example.html

@@ -1,4 +1,4 @@
-<h2>Counter</h2>
+<h1>Counter</h1>
 
 <p>This is a simple example of a Knockout component.</p>