message: docs(animations): add missing bracket to fadeAnimation
  Closes
diff: @@ -853,7 +853,7 @@ export function transition(
  * var fadeAnimation = animation([
  * style({ opacity: '{{ start }}' }),
  * animate('{{ time }}',
  - * style({ opacity: '{{ end }}'))
  + * style({ opacity: '{{ end }}'}))
  * ], { params: { time: '1000ms', start: 0, end: 1 }});
  * ```
  *
  