docs(toh-1): remove public access modifiers

closes #1009
Remove public access modifier on AppComponent properties to be
consistent throughout code tutorial

Author: storytimesolutions

public/docs/_examples/toh-1/ts-snippets/app.component.snippets.pt1.ts

@@ -33,13 +33,13 @@ template:`
 
 // #docregion app-component-1
 export class AppComponent {
-  public title = 'Tour of Heroes';
-  public hero = 'Windstorm';
+  title = 'Tour of Heroes';
+  hero = 'Windstorm';
 }
 // #enddocregion app-component-1
 
 // #docregion hero-property-1
-public hero: Hero = {
+hero: Hero = {
   id: 1,
   name: 'Windstorm'
 };

public/docs/_examples/toh-1/ts/app/app.component.ts

@@ -21,8 +21,8 @@ export class Hero {
     `
 })
 export class AppComponent {
-  public title = 'Tour of Heroes';
-  public hero: Hero = {
+  title = 'Tour of Heroes';
+  hero: Hero = {
     id: 1,
     name: 'Windstorm'
   };