docs(aio): rename cb- files and a few others

aio/content/examples/styleguide/src/05-02/app/app.component.html

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+<!-- #docregion -->
+<toh-hero-button></toh-hero-button>

aio/content/examples/styleguide/src/05-02/app/app.component.ts

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+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'sg-app',
+  templateUrl: './app.component.html'
+})
+export class AppComponent { }

aio/content/examples/styleguide/src/05-02/app/app.module.ts

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+import { NgModule } from '@angular/core';
+import { RouterModule } from '@angular/router';
+
+import { AppComponent } from './app.component';
+import { HeroButtonComponent } from './heroes';
+
+@NgModule({
+  imports: [
+    RouterModule.forChild([{ path: '05-02', component: AppComponent }])
+  ],
+  declarations: [
+    AppComponent,
+    HeroButtonComponent
+  ],
+  exports: [ AppComponent ]
+})
+export class AppModule {}

aio/content/examples/styleguide/src/05-02/app/heroes/index.ts

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+export * from './shared';

aio/content/examples/styleguide/src/05-02/app/heroes/shared/hero-button/hero-button.component.avoid.ts

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+// #docplaster
+import { Component } from '@angular/core';
+// #docregion example
+/* avoid */
+
+@Component({
+  selector: 'tohHeroButton',
+  templateUrl: './hero-button.component.html'
+})
+export class HeroButtonComponent {}
+// #enddocregion example

aio/content/examples/styleguide/src/05-02/app/heroes/shared/hero-button/hero-button.component.html

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+<button class="hero-button">Hero button</button>

aio/content/examples/styleguide/src/05-02/app/heroes/shared/hero-button/hero-button.component.ts

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+import { Component } from '@angular/core';
+
+// #docregion example
+@Component({
+  selector: 'toh-hero-button',
+  templateUrl: './hero-button.component.html'
+})
+export class HeroButtonComponent {}
+// #enddocregion example

aio/content/examples/styleguide/src/05-02/app/heroes/shared/hero-button/index.ts

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+export * from './hero-button.component';

aio/content/examples/styleguide/src/05-02/app/heroes/shared/index.ts

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+export * from './hero-button';

aio/content/examples/styleguide/src/05-02/app/index.ts

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+export * from './heroes';
+export * from './app.component';