Fix some demo wording (#270)

* Update main.component.html

* Update fake.component.html

Author: LouisAugry

src/app/demo/fake/fake.component.html

@@ -1,3 +1,3 @@
 <h1>Hello {{ name }}</h1>
 <p>I'm a component !</p>
-<p>Just to say, "Jack" is a templte binding value!</p>
+<p>Just to say, "Jack" is a template binding value!</p>

src/app/demo/main/main.component.html

@@ -1,6 +1,7 @@
 <ng-template #tpl>
     <h1>Hello {{ name }}</h1>
     <p>I'm TemplateRef content !</p>
+    <p>Just to say, "Bobby" is a template binding value!</p>
 </ng-template>
 
 <div class="container">