docs: edit EventEmitter name in styleguide (#33923)

Fixes #33890

PR Close #33923

aio/content/examples/styleguide/src/05-12/app/heroes/shared/hero-button/hero-button.component.avoid.ts

@@ -10,11 +10,11 @@ import { Component, EventEmitter } from '@angular/core';
     'label'
   ],
   outputs: [
-    'change'
+    'heroChange'
   ]
 })
 export class HeroButtonComponent {
-  change = new EventEmitter<any>();
+  heroChange = new EventEmitter<any>();
   label: string;
 }
 // #enddocregion example

aio/content/examples/styleguide/src/05-12/app/heroes/shared/hero-button/hero-button.component.ts

@@ -7,7 +7,7 @@ import { Component, EventEmitter, Input, Output } from '@angular/core';
   template: `<button>{{label}}</button>`
 })
 export class HeroButtonComponent {
-  @Output() change = new EventEmitter<any>();
+  @Output() heroChange = new EventEmitter<any>();
   @Input() label: string;
 }
 // #enddocregion example

aio/content/examples/styleguide/src/05-13/app/heroes/shared/hero-button/hero-button.component.avoid.ts

@@ -8,7 +8,7 @@ import { Component, EventEmitter, Input, Output } from '@angular/core';
 })
 export class HeroButtonComponent {
   // Pointless aliases
-  @Output('changeEvent') change = new EventEmitter<any>();
+  @Output('heroChangeEvent') heroChange = new EventEmitter<any>();
   @Input('labelAttribute') label: string;
 }
 // #enddocregion example

aio/content/examples/styleguide/src/05-13/app/heroes/shared/hero-button/hero-button.component.ts

@@ -8,7 +8,7 @@ import { Component, EventEmitter, Input, Output } from '@angular/core';
 })
 export class HeroButtonComponent {
   // No aliases
-  @Output() change = new EventEmitter<any>();
+  @Output() heroChange = new EventEmitter<any>();
   @Input() label: string;
 }
 // #enddocregion example

aio/content/guide/styleguide.md

@@ -2972,7 +2972,7 @@ in those editors that support it; it won't help with CSS styles.
 
 
 **Why?** If you ever need to rename the property or event name associated with
-`@Input` or `@Output`, you can modify it in a single place.
+`@Input()` or `@Output()`, you can modify it in a single place.
 
 
 </div>